CVE-2011-2721

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-08-05 · updated 2026-06-16
Weakness: CWE-189

Description

Off-by-one error in the cli_hm_scan function in matcher-hash.c in libclamav in ClamAV before 0.97.2 allows remote attackers to cause a denial of service (daemon crash) via an e-mail message that is not properly handled during certain hash calculations.

Affected products

Cisco ClamAV: through 0.97.1; 0.01, 0.02, 0.3, 0.03, 0.05, 0.8-rc3 (+110)

References

http://git.clamav.net/gitweb?p=clamav-devel.git%3Ba=blob_plain%3Bf=ChangeLog%3Bhb=clamav-0.97.2
http://git.clamav.net/gitweb?p=clamav-devel.git%3Ba=commit%3Bh=4842733eb3f09be61caeed83778bb6679141dbc5
http://lists.fedoraproject.org/pipermail/package-announce/2011-November/068940.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-November/068941.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-November/068942.html
http://secunia.com/advisories/45382
http://secunia.com/advisories/46717
http://securitytracker.com/id?1025858
http://www.mandriva.com/security/advisories?name=MDVSA-2011:122
http://www.openwall.com/lists/oss-security/2011/07/26/13
http://www.openwall.com/lists/oss-security/2011/07/26/3
http://www.osvdb.org/74181

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