Vulnerability Details CVE-2020-5243
uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. Some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This has been patched in uap-core 0.7.3.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.008
EPSS Ranking 72.4%
CVSS Severity
CVSS v3 Score 5.7
CVSS v2 Score 5.0
References
- https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1
- https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p
- https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1
- https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p
Products affected by CVE-2020-5243
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cpe:2.3:a:uap-core_project:uap-core:0.1.0
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cpe:2.3:a:uap-core_project:uap-core:0.1.1
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cpe:2.3:a:uap-core_project:uap-core:0.1.2
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cpe:2.3:a:uap-core_project:uap-core:0.2.0
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cpe:2.3:a:uap-core_project:uap-core:0.2.1
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cpe:2.3:a:uap-core_project:uap-core:0.2.2
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cpe:2.3:a:uap-core_project:uap-core:0.2.3
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cpe:2.3:a:uap-core_project:uap-core:0.2.4
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cpe:2.3:a:uap-core_project:uap-core:0.3.0
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cpe:2.3:a:uap-core_project:uap-core:0.3.1
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cpe:2.3:a:uap-core_project:uap-core:0.3.2
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cpe:2.3:a:uap-core_project:uap-core:0.3.4
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cpe:2.3:a:uap-core_project:uap-core:0.4.0
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cpe:2.3:a:uap-core_project:uap-core:0.5.0
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cpe:2.3:a:uap-core_project:uap-core:0.6.0
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cpe:2.3:a:uap-core_project:uap-core:0.6.1
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cpe:2.3:a:uap-core_project:uap-core:0.6.11
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cpe:2.3:a:uap-core_project:uap-core:0.6.2
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cpe:2.3:a:uap-core_project:uap-core:0.6.3
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cpe:2.3:a:uap-core_project:uap-core:0.6.4
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cpe:2.3:a:uap-core_project:uap-core:0.6.5
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cpe:2.3:a:uap-core_project:uap-core:0.6.6
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cpe:2.3:a:uap-core_project:uap-core:0.6.7
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cpe:2.3:a:uap-core_project:uap-core:0.6.8
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cpe:2.3:a:uap-core_project:uap-core:0.6.9
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cpe:2.3:a:uap-core_project:uap-core:0.7.0
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cpe:2.3:a:uap-core_project:uap-core:0.7.1
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cpe:2.3:a:uap-core_project:uap-core:0.7.2