CVE-2009-5155

glibc: parse_reg_exp in posix/regcomp.c misparses alternatives leading to denial of service or trigger incorrect result

Published Feb 26, 2019 CVSS 3.0 · 7.5 High EPSS 3.9% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2009-5109 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.
Ubuntu USN Ubuntu USN USN-4954-1 GNU C Library vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.01102}

epss

{'score': 0.01374}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 7, 2024, 7:32 AM
Reserved
Feb 25, 2019, 12:00 AM
Status
Modified
Published
Feb 26, 2019, 2:29 AM
Modified
Jun 16, 2026, 11:15 PM
Severity
Moderate
Public date
Mar 20, 2019, 12:00 AM