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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2018-6335

A Malformed h2 frame can cause 'std::out_of_range' exception when parsing priority meta data. This behavior can lead to denial-of-service. This affects all supported versions of HHVM (3.25.2, 3.24.6, and 3.21.10 and below) when using the proxygen server to handle HTTP2 requests.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 68.5%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
Products affected by CVE-2018-6335
  • Facebook » Hhvm » Version: 2.2.0
    cpe:2.3:a:facebook:hhvm:2.2.0
  • Facebook » Hhvm » Version: 2.3.0
    cpe:2.3:a:facebook:hhvm:2.3.0
  • Facebook » Hhvm » Version: 2.3.1
    cpe:2.3:a:facebook:hhvm:2.3.1
  • Facebook » Hhvm » Version: 2.3.2
    cpe:2.3:a:facebook:hhvm:2.3.2
  • Facebook » Hhvm » Version: 2.3.3
    cpe:2.3:a:facebook:hhvm:2.3.3
  • Facebook » Hhvm » Version: 2.4.0
    cpe:2.3:a:facebook:hhvm:2.4.0
  • Facebook » Hhvm » Version: 2.4.1
    cpe:2.3:a:facebook:hhvm:2.4.1
  • Facebook » Hhvm » Version: 2.4.2
    cpe:2.3:a:facebook:hhvm:2.4.2
  • Facebook » Hhvm » Version: 3.0.0
    cpe:2.3:a:facebook:hhvm:3.0.0
  • Facebook » Hhvm » Version: 3.0.1
    cpe:2.3:a:facebook:hhvm:3.0.1
  • Facebook » Hhvm » Version: 3.1.0
    cpe:2.3:a:facebook:hhvm:3.1.0
  • Facebook » Hhvm » Version: 3.10.0
    cpe:2.3:a:facebook:hhvm:3.10.0
  • Facebook » Hhvm » Version: 3.10.1
    cpe:2.3:a:facebook:hhvm:3.10.1
  • Facebook » Hhvm » Version: 3.11.0
    cpe:2.3:a:facebook:hhvm:3.11.0
  • Facebook » Hhvm » Version: 3.11.1
    cpe:2.3:a:facebook:hhvm:3.11.1
  • Facebook » Hhvm » Version: 3.12.0
    cpe:2.3:a:facebook:hhvm:3.12.0
  • Facebook » Hhvm » Version: 3.12.1
    cpe:2.3:a:facebook:hhvm:3.12.1
  • Facebook » Hhvm » Version: 3.12.10
    cpe:2.3:a:facebook:hhvm:3.12.10
  • Facebook » Hhvm » Version: 3.12.11
    cpe:2.3:a:facebook:hhvm:3.12.11
  • Facebook » Hhvm » Version: 3.12.12
    cpe:2.3:a:facebook:hhvm:3.12.12
  • Facebook » Hhvm » Version: 3.12.13
    cpe:2.3:a:facebook:hhvm:3.12.13
  • Facebook » Hhvm » Version: 3.12.14
    cpe:2.3:a:facebook:hhvm:3.12.14
  • Facebook » Hhvm » Version: 3.12.2
    cpe:2.3:a:facebook:hhvm:3.12.2
  • Facebook » Hhvm » Version: 3.12.3
    cpe:2.3:a:facebook:hhvm:3.12.3
  • Facebook » Hhvm » Version: 3.12.4
    cpe:2.3:a:facebook:hhvm:3.12.4
  • Facebook » Hhvm » Version: 3.12.5
    cpe:2.3:a:facebook:hhvm:3.12.5
  • Facebook » Hhvm » Version: 3.12.6
    cpe:2.3:a:facebook:hhvm:3.12.6
  • Facebook » Hhvm » Version: 3.12.7
    cpe:2.3:a:facebook:hhvm:3.12.7
  • Facebook » Hhvm » Version: 3.12.8
    cpe:2.3:a:facebook:hhvm:3.12.8
  • Facebook » Hhvm » Version: 3.12.9
    cpe:2.3:a:facebook:hhvm:3.12.9
  • Facebook » Hhvm » Version: 3.13.0
    cpe:2.3:a:facebook:hhvm:3.13.0
  • Facebook » Hhvm » Version: 3.13.1
    cpe:2.3:a:facebook:hhvm:3.13.1
  • Facebook » Hhvm » Version: 3.13.2
    cpe:2.3:a:facebook:hhvm:3.13.2
  • Facebook » Hhvm » Version: 3.14.0
    cpe:2.3:a:facebook:hhvm:3.14.0
  • Facebook » Hhvm » Version: 3.14.1
    cpe:2.3:a:facebook:hhvm:3.14.1
  • Facebook » Hhvm » Version: 3.14.2
    cpe:2.3:a:facebook:hhvm:3.14.2
  • Facebook » Hhvm » Version: 3.14.3
    cpe:2.3:a:facebook:hhvm:3.14.3
  • Facebook » Hhvm » Version: 3.14.4
    cpe:2.3:a:facebook:hhvm:3.14.4
  • Facebook » Hhvm » Version: 3.14.5
    cpe:2.3:a:facebook:hhvm:3.14.5
  • Facebook » Hhvm » Version: 3.15.0
    cpe:2.3:a:facebook:hhvm:3.15.0
  • Facebook » Hhvm » Version: 3.15.1
    cpe:2.3:a:facebook:hhvm:3.15.1
  • Facebook » Hhvm » Version: 3.15.2
    cpe:2.3:a:facebook:hhvm:3.15.2
  • Facebook » Hhvm » Version: 3.15.3
    cpe:2.3:a:facebook:hhvm:3.15.3
  • Facebook » Hhvm » Version: 3.15.4
    cpe:2.3:a:facebook:hhvm:3.15.4
  • Facebook » Hhvm » Version: 3.15.5
    cpe:2.3:a:facebook:hhvm:3.15.5
  • Facebook » Hhvm » Version: 3.15.6
    cpe:2.3:a:facebook:hhvm:3.15.6
  • Facebook » Hhvm » Version: 3.15.7
    cpe:2.3:a:facebook:hhvm:3.15.7
  • Facebook » Hhvm » Version: 3.15.8
    cpe:2.3:a:facebook:hhvm:3.15.8
  • Facebook » Hhvm » Version: 3.17.0
    cpe:2.3:a:facebook:hhvm:3.17.0
  • Facebook » Hhvm » Version: 3.17.1
    cpe:2.3:a:facebook:hhvm:3.17.1
  • Facebook » Hhvm » Version: 3.17.2
    cpe:2.3:a:facebook:hhvm:3.17.2
  • Facebook » Hhvm » Version: 3.17.3
    cpe:2.3:a:facebook:hhvm:3.17.3
  • Facebook » Hhvm » Version: 3.18.0
    cpe:2.3:a:facebook:hhvm:3.18.0
  • Facebook » Hhvm » Version: 3.18.1
    cpe:2.3:a:facebook:hhvm:3.18.1
  • Facebook » Hhvm » Version: 3.18.2
    cpe:2.3:a:facebook:hhvm:3.18.2
  • Facebook » Hhvm » Version: 3.18.3
    cpe:2.3:a:facebook:hhvm:3.18.3
  • Facebook » Hhvm » Version: 3.18.4
    cpe:2.3:a:facebook:hhvm:3.18.4
  • Facebook » Hhvm » Version: 3.18.5
    cpe:2.3:a:facebook:hhvm:3.18.5
  • Facebook » Hhvm » Version: 3.18.6
    cpe:2.3:a:facebook:hhvm:3.18.6
  • Facebook » Hhvm » Version: 3.18.7
    cpe:2.3:a:facebook:hhvm:3.18.7
  • Facebook » Hhvm » Version: 3.18.8
    cpe:2.3:a:facebook:hhvm:3.18.8
  • Facebook » Hhvm » Version: 3.19.0
    cpe:2.3:a:facebook:hhvm:3.19.0
  • Facebook » Hhvm » Version: 3.19.1
    cpe:2.3:a:facebook:hhvm:3.19.1
  • Facebook » Hhvm » Version: 3.19.2
    cpe:2.3:a:facebook:hhvm:3.19.2
  • Facebook » Hhvm » Version: 3.2.0
    cpe:2.3:a:facebook:hhvm:3.2.0
  • Facebook » Hhvm » Version: 3.20.0
    cpe:2.3:a:facebook:hhvm:3.20.0
  • Facebook » Hhvm » Version: 3.20.1
    cpe:2.3:a:facebook:hhvm:3.20.1
  • Facebook » Hhvm » Version: 3.20.2
    cpe:2.3:a:facebook:hhvm:3.20.2
  • Facebook » Hhvm » Version: 3.21.0
    cpe:2.3:a:facebook:hhvm:3.21.0
  • Facebook » Hhvm » Version: 3.21.1
    cpe:2.3:a:facebook:hhvm:3.21.1
  • Facebook » Hhvm » Version: 3.21.10
    cpe:2.3:a:facebook:hhvm:3.21.10
  • Facebook » Hhvm » Version: 3.21.2
    cpe:2.3:a:facebook:hhvm:3.21.2
  • Facebook » Hhvm » Version: 3.21.3
    cpe:2.3:a:facebook:hhvm:3.21.3
  • Facebook » Hhvm » Version: 3.21.4
    cpe:2.3:a:facebook:hhvm:3.21.4
  • Facebook » Hhvm » Version: 3.21.5
    cpe:2.3:a:facebook:hhvm:3.21.5
  • Facebook » Hhvm » Version: 3.21.6
    cpe:2.3:a:facebook:hhvm:3.21.6
  • Facebook » Hhvm » Version: 3.21.7
    cpe:2.3:a:facebook:hhvm:3.21.7
  • Facebook » Hhvm » Version: 3.21.8
    cpe:2.3:a:facebook:hhvm:3.21.8
  • Facebook » Hhvm » Version: 3.21.9
    cpe:2.3:a:facebook:hhvm:3.21.9
  • Facebook » Hhvm » Version: 3.24.6
    cpe:2.3:a:facebook:hhvm:3.24.6
  • Facebook » Hhvm » Version: 3.25.2
    cpe:2.3:a:facebook:hhvm:3.25.2
  • Facebook » Hhvm » Version: 3.3.0
    cpe:2.3:a:facebook:hhvm:3.3.0
  • Facebook » Hhvm » Version: 3.3.1
    cpe:2.3:a:facebook:hhvm:3.3.1
  • Facebook » Hhvm » Version: 3.3.2
    cpe:2.3:a:facebook:hhvm:3.3.2
  • Facebook » Hhvm » Version: 3.3.3
    cpe:2.3:a:facebook:hhvm:3.3.3
  • Facebook » Hhvm » Version: 3.3.4
    cpe:2.3:a:facebook:hhvm:3.3.4
  • Facebook » Hhvm » Version: 3.3.5
    cpe:2.3:a:facebook:hhvm:3.3.5
  • Facebook » Hhvm » Version: 3.3.6
    cpe:2.3:a:facebook:hhvm:3.3.6
  • Facebook » Hhvm » Version: 3.3.7
    cpe:2.3:a:facebook:hhvm:3.3.7
  • Facebook » Hhvm » Version: 3.4.0
    cpe:2.3:a:facebook:hhvm:3.4.0
  • Facebook » Hhvm » Version: 3.4.1
    cpe:2.3:a:facebook:hhvm:3.4.1
  • Facebook » Hhvm » Version: 3.4.2
    cpe:2.3:a:facebook:hhvm:3.4.2
  • Facebook » Hhvm » Version: 3.5.0
    cpe:2.3:a:facebook:hhvm:3.5.0
  • Facebook » Hhvm » Version: 3.5.1
    cpe:2.3:a:facebook:hhvm:3.5.1
  • Facebook » Hhvm » Version: 3.6.0
    cpe:2.3:a:facebook:hhvm:3.6.0
  • Facebook » Hhvm » Version: 3.6.1
    cpe:2.3:a:facebook:hhvm:3.6.1
  • Facebook » Hhvm » Version: 3.6.2
    cpe:2.3:a:facebook:hhvm:3.6.2
  • Facebook » Hhvm » Version: 3.6.3
    cpe:2.3:a:facebook:hhvm:3.6.3
  • Facebook » Hhvm » Version: 3.6.4
    cpe:2.3:a:facebook:hhvm:3.6.4
  • Facebook » Hhvm » Version: 3.6.5
    cpe:2.3:a:facebook:hhvm:3.6.5
  • Facebook » Hhvm » Version: 3.6.6
    cpe:2.3:a:facebook:hhvm:3.6.6
  • Facebook » Hhvm » Version: 3.7.0
    cpe:2.3:a:facebook:hhvm:3.7.0
  • Facebook » Hhvm » Version: 3.7.1
    cpe:2.3:a:facebook:hhvm:3.7.1
  • Facebook » Hhvm » Version: 3.7.2
    cpe:2.3:a:facebook:hhvm:3.7.2
  • Facebook » Hhvm » Version: 3.7.3
    cpe:2.3:a:facebook:hhvm:3.7.3
  • Facebook » Hhvm » Version: 3.8.0
    cpe:2.3:a:facebook:hhvm:3.8.0
  • Facebook » Hhvm » Version: 3.8.1
    cpe:2.3:a:facebook:hhvm:3.8.1
  • Facebook » Hhvm » Version: 3.9.0
    cpe:2.3:a:facebook:hhvm:3.9.0
  • Facebook » Hhvm » Version: 3.9.1
    cpe:2.3:a:facebook:hhvm:3.9.1
  • Facebook » Hhvm » Version: 3.9.10
    cpe:2.3:a:facebook:hhvm:3.9.10
  • Facebook » Hhvm » Version: 3.9.2
    cpe:2.3:a:facebook:hhvm:3.9.2
  • Facebook » Hhvm » Version: 3.9.3
    cpe:2.3:a:facebook:hhvm:3.9.3
  • Facebook » Hhvm » Version: 3.9.4
    cpe:2.3:a:facebook:hhvm:3.9.4
  • Facebook » Hhvm » Version: 3.9.5
    cpe:2.3:a:facebook:hhvm:3.9.5
  • Facebook » Hhvm » Version: 3.9.6
    cpe:2.3:a:facebook:hhvm:3.9.6
  • Facebook » Hhvm » Version: 3.9.7
    cpe:2.3:a:facebook:hhvm:3.9.7
  • Facebook » Hhvm » Version: 3.9.8
    cpe:2.3:a:facebook:hhvm:3.9.8
  • Facebook » Hhvm » Version: 3.9.9
    cpe:2.3:a:facebook:hhvm:3.9.9


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