Name: CVE-2020-5243: Improper Input Validation
Creator: Rapid7
Published: 2020-02-20T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2020-5243, CWE-20, CWE-1333, CVSS 5.7, EPSS 0.00805

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.

CVSS Details

CVSS 3.1 Base Score: 5.7
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade uap-core	Jul 30, 2024	Feb 21, 2020
Ubuntu	—	No solution exists	Jun 26, 2025	Feb 21, 2020

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CVSS Details

Covered by Rapid7

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