CVE-2010-4051

Glibc vulnerability

CVSS

5.0

EPSS

40.0%

EPSS pct

98th

Exploited

No known

The regcomp implementation in the GNU C Library (aka glibc or libc6) through 2.11.3, and 2.12.x through 2.12.2, allows context-dependent attackers to cause a denial of service (application crash) via a regular expression containing adjacent bounded repetitions that bypass the intended RE_DUP_MAX limitation, as demonstrated by a {10,}{10,}{10,}{10,}{10,} sequence in the proftpd.gnu.c exploit for ProFTPD, related to a "RE_DUP_MAX overflow."

Affected vendor

Gnu

Affected product

Glibc

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Published

2011-01-13

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 40.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2010-4051

Confirm whether Gnu Glibc is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2010-4051.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2010-4051

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