CVE-2020-5243: Uncontrolled Resource Consumption

February 21, 2020 (updated February 25, 2020)

uap-core 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

References

github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1
github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p
nvd.nist.gov/vuln/detail/CVE-2020-5243

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