UBUNTU-CVE-2009-5155

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2009-5155
Downstream
USN-4954-1
Published: 26 Feb 2019, 02:29
Last modified:22 Apr 2026, 08:45

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.0 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Feb 2019, 02:29
Published
Vulnerability first disclosed
22 Apr 2026, 08:45
Last Modified
Vulnerability information updated

Description

In the GNU C Library (aka glibc or libc6) before 2.28, parse_reg_exp in posix/regcomp.c misparses alternatives, which allows attackers to cause a denial of service (assertion failure and application exit) or trigger an incorrect result by attempting a regular-expression match.

CVSS Metrics

  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • ubuntu•eglibc

    all

  • ubuntu•glibc

    < 2.23-0ubuntu11.3 | all

  • ubuntu•gnulib

    all | all

References (3)