Vulnerability Details CVE-2020-1893
Insufficient boundary checks when decoding JSON in TryParse reads out of bounds memory, potentially leading to DOS. This issue affects HHVM 4.45.0, 4.44.0, 4.43.0, 4.42.0, 4.41.0, 4.40.0, 4.39.0, versions between 4.33.0 and 4.38.0 (inclusive), versions between 4.9.0 and 4.32.0 (inclusive), and versions prior to 4.8.7.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 65.3%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
Products affected by CVE-2020-1893
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cpe:2.3:a:facebook:hhvm:2.2.0
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cpe:2.3:a:facebook:hhvm:2.3.0
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cpe:2.3:a:facebook:hhvm:2.3.1
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cpe:2.3:a:facebook:hhvm:2.3.2
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cpe:2.3:a:facebook:hhvm:2.3.3
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cpe:2.3:a:facebook:hhvm:2.4.0
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cpe:2.3:a:facebook:hhvm:2.4.1
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cpe:2.3:a:facebook:hhvm:2.4.2
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cpe:2.3:a:facebook:hhvm:3.0.0
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cpe:2.3:a:facebook:hhvm:3.0.1
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cpe:2.3:a:facebook:hhvm:3.1.0
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cpe:2.3:a:facebook:hhvm:3.10.0
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cpe:2.3:a:facebook:hhvm:3.10.1
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cpe:2.3:a:facebook:hhvm:3.11.0
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cpe:2.3:a:facebook:hhvm:3.11.1
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cpe:2.3:a:facebook:hhvm:3.12.0
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cpe:2.3:a:facebook:hhvm:3.12.1
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cpe:2.3:a:facebook:hhvm:3.12.10
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cpe:2.3:a:facebook:hhvm:3.12.11
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cpe:2.3:a:facebook:hhvm:3.12.12
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cpe:2.3:a:facebook:hhvm:3.12.13
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cpe:2.3:a:facebook:hhvm:3.12.14
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cpe:2.3:a:facebook:hhvm:3.12.2
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cpe:2.3:a:facebook:hhvm:3.12.3
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cpe:2.3:a:facebook:hhvm:3.12.4
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cpe:2.3:a:facebook:hhvm:3.12.5
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cpe:2.3:a:facebook:hhvm:3.12.6
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cpe:2.3:a:facebook:hhvm:3.12.7
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cpe:2.3:a:facebook:hhvm:3.12.8
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cpe:2.3:a:facebook:hhvm:3.12.9
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cpe:2.3:a:facebook:hhvm:3.13.0
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cpe:2.3:a:facebook:hhvm:3.13.1
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cpe:2.3:a:facebook:hhvm:3.13.2
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cpe:2.3:a:facebook:hhvm:3.14.0
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cpe:2.3:a:facebook:hhvm:3.14.1
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cpe:2.3:a:facebook:hhvm:3.14.2
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cpe:2.3:a:facebook:hhvm:3.14.3
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cpe:2.3:a:facebook:hhvm:3.14.4
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cpe:2.3:a:facebook:hhvm:3.14.5
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cpe:2.3:a:facebook:hhvm:3.15.0
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cpe:2.3:a:facebook:hhvm:3.15.1
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cpe:2.3:a:facebook:hhvm:3.15.2
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cpe:2.3:a:facebook:hhvm:3.15.3
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cpe:2.3:a:facebook:hhvm:3.15.4
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cpe:2.3:a:facebook:hhvm:3.15.5
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cpe:2.3:a:facebook:hhvm:3.15.6
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cpe:2.3:a:facebook:hhvm:3.15.7
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cpe:2.3:a:facebook:hhvm:3.15.8
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cpe:2.3:a:facebook:hhvm:3.17.0
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cpe:2.3:a:facebook:hhvm:3.17.1
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cpe:2.3:a:facebook:hhvm:3.17.2
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cpe:2.3:a:facebook:hhvm:3.17.3
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cpe:2.3:a:facebook:hhvm:3.18.0
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cpe:2.3:a:facebook:hhvm:3.18.1
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cpe:2.3:a:facebook:hhvm:3.18.2
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cpe:2.3:a:facebook:hhvm:3.18.3
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cpe:2.3:a:facebook:hhvm:3.18.4
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cpe:2.3:a:facebook:hhvm:3.18.5
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cpe:2.3:a:facebook:hhvm:3.18.6
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cpe:2.3:a:facebook:hhvm:3.18.7
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cpe:2.3:a:facebook:hhvm:3.18.8
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cpe:2.3:a:facebook:hhvm:3.19.0
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cpe:2.3:a:facebook:hhvm:3.19.1
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cpe:2.3:a:facebook:hhvm:3.19.2
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cpe:2.3:a:facebook:hhvm:3.2.0
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cpe:2.3:a:facebook:hhvm:3.20.0
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cpe:2.3:a:facebook:hhvm:3.20.1
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cpe:2.3:a:facebook:hhvm:3.20.2
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cpe:2.3:a:facebook:hhvm:3.21.0
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cpe:2.3:a:facebook:hhvm:3.21.1
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cpe:2.3:a:facebook:hhvm:3.21.10
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cpe:2.3:a:facebook:hhvm:3.21.11
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cpe:2.3:a:facebook:hhvm:3.21.2
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cpe:2.3:a:facebook:hhvm:3.21.3
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cpe:2.3:a:facebook:hhvm:3.21.4
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cpe:2.3:a:facebook:hhvm:3.21.5
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cpe:2.3:a:facebook:hhvm:3.21.6
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cpe:2.3:a:facebook:hhvm:3.21.7
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cpe:2.3:a:facebook:hhvm:3.21.8
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cpe:2.3:a:facebook:hhvm:3.21.9
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cpe:2.3:a:facebook:hhvm:3.22.0
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cpe:2.3:a:facebook:hhvm:3.23.0
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cpe:2.3:a:facebook:hhvm:3.23.1
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cpe:2.3:a:facebook:hhvm:3.23.2
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cpe:2.3:a:facebook:hhvm:3.23.3
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cpe:2.3:a:facebook:hhvm:3.23.4
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cpe:2.3:a:facebook:hhvm:3.24.0
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cpe:2.3:a:facebook:hhvm:3.24.1
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cpe:2.3:a:facebook:hhvm:3.24.2
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cpe:2.3:a:facebook:hhvm:3.24.3
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cpe:2.3:a:facebook:hhvm:3.24.4
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cpe:2.3:a:facebook:hhvm:3.24.5
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cpe:2.3:a:facebook:hhvm:3.24.6
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cpe:2.3:a:facebook:hhvm:3.24.7
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cpe:2.3:a:facebook:hhvm:3.24.8
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cpe:2.3:a:facebook:hhvm:3.25.0
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cpe:2.3:a:facebook:hhvm:3.25.1
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cpe:2.3:a:facebook:hhvm:3.25.2
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cpe:2.3:a:facebook:hhvm:3.25.3
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cpe:2.3:a:facebook:hhvm:3.26.0
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cpe:2.3:a:facebook:hhvm:3.26.1
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cpe:2.3:a:facebook:hhvm:3.26.2
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cpe:2.3:a:facebook:hhvm:3.26.3
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cpe:2.3:a:facebook:hhvm:3.27.0
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cpe:2.3:a:facebook:hhvm:3.27.1
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cpe:2.3:a:facebook:hhvm:3.27.2
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cpe:2.3:a:facebook:hhvm:3.27.3
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cpe:2.3:a:facebook:hhvm:3.27.4
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cpe:2.3:a:facebook:hhvm:3.27.5
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cpe:2.3:a:facebook:hhvm:3.27.6
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cpe:2.3:a:facebook:hhvm:3.27.7
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cpe:2.3:a:facebook:hhvm:3.27.8
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cpe:2.3:a:facebook:hhvm:3.28.0
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cpe:2.3:a:facebook:hhvm:3.28.1
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cpe:2.3:a:facebook:hhvm:3.28.2
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cpe:2.3:a:facebook:hhvm:3.28.3
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cpe:2.3:a:facebook:hhvm:3.29.0
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cpe:2.3:a:facebook:hhvm:3.29.1
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cpe:2.3:a:facebook:hhvm:3.3.0
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cpe:2.3:a:facebook:hhvm:3.3.1
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cpe:2.3:a:facebook:hhvm:3.3.2
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cpe:2.3:a:facebook:hhvm:3.3.3
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cpe:2.3:a:facebook:hhvm:3.3.4
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cpe:2.3:a:facebook:hhvm:3.3.5
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cpe:2.3:a:facebook:hhvm:3.3.6
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cpe:2.3:a:facebook:hhvm:3.3.7
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cpe:2.3:a:facebook:hhvm:3.30.0
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cpe:2.3:a:facebook:hhvm:3.30.1
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cpe:2.3:a:facebook:hhvm:3.30.10
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cpe:2.3:a:facebook:hhvm:3.30.11
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cpe:2.3:a:facebook:hhvm:3.30.12
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cpe:2.3:a:facebook:hhvm:3.30.2
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cpe:2.3:a:facebook:hhvm:3.30.3
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cpe:2.3:a:facebook:hhvm:3.30.4
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cpe:2.3:a:facebook:hhvm:3.30.5
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cpe:2.3:a:facebook:hhvm:3.30.6
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cpe:2.3:a:facebook:hhvm:3.30.7
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cpe:2.3:a:facebook:hhvm:3.30.8
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cpe:2.3:a:facebook:hhvm:3.30.9
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cpe:2.3:a:facebook:hhvm:3.4.0
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cpe:2.3:a:facebook:hhvm:3.4.1
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cpe:2.3:a:facebook:hhvm:3.4.2
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cpe:2.3:a:facebook:hhvm:3.5.0
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cpe:2.3:a:facebook:hhvm:3.5.1
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cpe:2.3:a:facebook:hhvm:3.6.0
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cpe:2.3:a:facebook:hhvm:3.6.1
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cpe:2.3:a:facebook:hhvm:3.6.2
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cpe:2.3:a:facebook:hhvm:3.6.3
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cpe:2.3:a:facebook:hhvm:3.6.4
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cpe:2.3:a:facebook:hhvm:3.6.5
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cpe:2.3:a:facebook:hhvm:3.6.6
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cpe:2.3:a:facebook:hhvm:3.7.0
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cpe:2.3:a:facebook:hhvm:3.7.1
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cpe:2.3:a:facebook:hhvm:3.7.2
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cpe:2.3:a:facebook:hhvm:3.7.3
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cpe:2.3:a:facebook:hhvm:3.8.0
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cpe:2.3:a:facebook:hhvm:3.8.1
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cpe:2.3:a:facebook:hhvm:3.9.0
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cpe:2.3:a:facebook:hhvm:3.9.1
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cpe:2.3:a:facebook:hhvm:3.9.10
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cpe:2.3:a:facebook:hhvm:3.9.2
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cpe:2.3:a:facebook:hhvm:3.9.3
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cpe:2.3:a:facebook:hhvm:3.9.4
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cpe:2.3:a:facebook:hhvm:3.9.5
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cpe:2.3:a:facebook:hhvm:3.9.6
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cpe:2.3:a:facebook:hhvm:3.9.7
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cpe:2.3:a:facebook:hhvm:3.9.8
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cpe:2.3:a:facebook:hhvm:3.9.9
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cpe:2.3:a:facebook:hhvm:4.0.0
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cpe:2.3:a:facebook:hhvm:4.0.1
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cpe:2.3:a:facebook:hhvm:4.0.2
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cpe:2.3:a:facebook:hhvm:4.0.3
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cpe:2.3:a:facebook:hhvm:4.0.4
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cpe:2.3:a:facebook:hhvm:4.1.0
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cpe:2.3:a:facebook:hhvm:4.10.0
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cpe:2.3:a:facebook:hhvm:4.11.0
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cpe:2.3:a:facebook:hhvm:4.12.0
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cpe:2.3:a:facebook:hhvm:4.12.1
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cpe:2.3:a:facebook:hhvm:4.12.2
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cpe:2.3:a:facebook:hhvm:4.13.0
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cpe:2.3:a:facebook:hhvm:4.13.1
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cpe:2.3:a:facebook:hhvm:4.13.2
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cpe:2.3:a:facebook:hhvm:4.14.0
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cpe:2.3:a:facebook:hhvm:4.14.1
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cpe:2.3:a:facebook:hhvm:4.14.2
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cpe:2.3:a:facebook:hhvm:4.15.0
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cpe:2.3:a:facebook:hhvm:4.15.1
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cpe:2.3:a:facebook:hhvm:4.15.2
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cpe:2.3:a:facebook:hhvm:4.15.3
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cpe:2.3:a:facebook:hhvm:4.16.0
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cpe:2.3:a:facebook:hhvm:4.16.1
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cpe:2.3:a:facebook:hhvm:4.16.2
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cpe:2.3:a:facebook:hhvm:4.16.3
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cpe:2.3:a:facebook:hhvm:4.16.4
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cpe:2.3:a:facebook:hhvm:4.17.0
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cpe:2.3:a:facebook:hhvm:4.17.1
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cpe:2.3:a:facebook:hhvm:4.17.2
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cpe:2.3:a:facebook:hhvm:4.17.3
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cpe:2.3:a:facebook:hhvm:4.18.0
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cpe:2.3:a:facebook:hhvm:4.18.1
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cpe:2.3:a:facebook:hhvm:4.18.2
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cpe:2.3:a:facebook:hhvm:4.18.3
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cpe:2.3:a:facebook:hhvm:4.19.0
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cpe:2.3:a:facebook:hhvm:4.19.1
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cpe:2.3:a:facebook:hhvm:4.19.2
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cpe:2.3:a:facebook:hhvm:4.2.0
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cpe:2.3:a:facebook:hhvm:4.20.0
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cpe:2.3:a:facebook:hhvm:4.20.1
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cpe:2.3:a:facebook:hhvm:4.20.2
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cpe:2.3:a:facebook:hhvm:4.20.3
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cpe:2.3:a:facebook:hhvm:4.21.0
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cpe:2.3:a:facebook:hhvm:4.21.1
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cpe:2.3:a:facebook:hhvm:4.22.0
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cpe:2.3:a:facebook:hhvm:4.22.1
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cpe:2.3:a:facebook:hhvm:4.23.0
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cpe:2.3:a:facebook:hhvm:4.23.1
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cpe:2.3:a:facebook:hhvm:4.23.2
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cpe:2.3:a:facebook:hhvm:4.24.0
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cpe:2.3:a:facebook:hhvm:4.24.1
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cpe:2.3:a:facebook:hhvm:4.25.0
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cpe:2.3:a:facebook:hhvm:4.25.1
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cpe:2.3:a:facebook:hhvm:4.26.0
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cpe:2.3:a:facebook:hhvm:4.26.1
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cpe:2.3:a:facebook:hhvm:4.27.0
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cpe:2.3:a:facebook:hhvm:4.27.1
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cpe:2.3:a:facebook:hhvm:4.28.0
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cpe:2.3:a:facebook:hhvm:4.28.1
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cpe:2.3:a:facebook:hhvm:4.28.2
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cpe:2.3:a:facebook:hhvm:4.29.0
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cpe:2.3:a:facebook:hhvm:4.3.0
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cpe:2.3:a:facebook:hhvm:4.3.1
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cpe:2.3:a:facebook:hhvm:4.30.0
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cpe:2.3:a:facebook:hhvm:4.31.0
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cpe:2.3:a:facebook:hhvm:4.32.0
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cpe:2.3:a:facebook:hhvm:4.33.0
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cpe:2.3:a:facebook:hhvm:4.34.0
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cpe:2.3:a:facebook:hhvm:4.35.0
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cpe:2.3:a:facebook:hhvm:4.36.0
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cpe:2.3:a:facebook:hhvm:4.38.0
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cpe:2.3:a:facebook:hhvm:4.39.0
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cpe:2.3:a:facebook:hhvm:4.4.0
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cpe:2.3:a:facebook:hhvm:4.4.1
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cpe:2.3:a:facebook:hhvm:4.40.0
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cpe:2.3:a:facebook:hhvm:4.41.0
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cpe:2.3:a:facebook:hhvm:4.42.0
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cpe:2.3:a:facebook:hhvm:4.43.0
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cpe:2.3:a:facebook:hhvm:4.44.0
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cpe:2.3:a:facebook:hhvm:4.45.0
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cpe:2.3:a:facebook:hhvm:4.5.0
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cpe:2.3:a:facebook:hhvm:4.5.1
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cpe:2.3:a:facebook:hhvm:4.6.0
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cpe:2.3:a:facebook:hhvm:4.6.1
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cpe:2.3:a:facebook:hhvm:4.7.0
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cpe:2.3:a:facebook:hhvm:4.7.1
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cpe:2.3:a:facebook:hhvm:4.8.0
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cpe:2.3:a:facebook:hhvm:4.8.1
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cpe:2.3:a:facebook:hhvm:4.8.2
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cpe:2.3:a:facebook:hhvm:4.8.3
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cpe:2.3:a:facebook:hhvm:4.8.4
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cpe:2.3:a:facebook:hhvm:4.8.5
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cpe:2.3:a:facebook:hhvm:4.8.6
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cpe:2.3:a:facebook:hhvm:4.9.0
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cpe:2.3:a:facebook:hhvm:4.9.1