CVE-2020-5243CWE-20

Denial of Service in uap-core when processing crafted User-Agent strings

Medium · published February 20, 2020

CVSS v3.1
5.7
EPSS
2%
Percentile
83.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.02289 · 83.1th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2020-02-20T23:15Z
EPSS history
Timeline
  • 20 FEB 23:15Z
    Denial of Service in uap-core when processing crafted User-Agent strings
    cvelistv5