CVE-2009-4881

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-06-01 · updated 2026-06-16
Weakness: CWE-189

Description

Integer overflow in the __vstrfmon_l function in stdlib/strfmon_l.c in the strfmon implementation in the GNU C Library (aka glibc or libc6) before 2.10.1 allows context-dependent attackers to cause a denial of service (application crash) via a crafted format string, as demonstrated by the %99999999999999999999n string, a related issue to CVE-2008-1391.

Affected products

GNU C Library (glibc): through 2.9; 1.00, 1.01, 1.02, 1.03, 1.04, 1.05 (+39)

References

http://security.gentoo.org/glsa/glsa-201011-01.xml
http://sources.redhat.com/bugzilla/show_bug.cgi?id=10600
http://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=153aa31b93be22e01b236375fb02a9f9b9a0195f
http://www.debian.org/security/2010/dsa-2058
http://www.mandriva.com/security/advisories?name=MDVSA-2010:111
https://exchange.xforce.ibmcloud.com/vulnerabilities/59241
http://security.gentoo.org/glsa/glsa-201011-01.xml
http://sources.redhat.com/bugzilla/show_bug.cgi?id=10600
http://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=153aa31b93be22e01b236375fb02a9f9b9a0195f
http://www.debian.org/security/2010/dsa-2058
http://www.mandriva.com/security/advisories?name=MDVSA-2010:111
https://exchange.xforce.ibmcloud.com/vulnerabilities/59241

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