CVE-2011-2721
Off-by-one error in the cli_hm_scan function in matcher-hash.c in libclamav in ClamAV before 0.97...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2011-2721- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-189
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-2721- Updated
- 2026-11-02
EUVDEUVD-2011-2699 No score
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.
- Record
EUVD-2011-2699- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x69w-v5wv-rxpx No score
Off-by-one error in the cli_hm_scan function in matcher-hash.c in libclamav in ClamAV before 0.97...
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.
- Record
GHSA-x69w-v5wv-rxpx- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2011-2721- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-2721 No score
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.
- Record
DEBIAN-CVE-2011-2721- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10571-1 No score
clamav-0.99.2-4.1 on GA media
These are all security issues fixed in the clamav-0.99.2-4.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10571-1- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-2721 is a medium vulnerability (CVSS 5.0) in Clamav, published August 5, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.38%, the 88th percentile. Fixed in clamav 0.97.2+dfsg-1.
References
secunia.com/advisories/45382
lists.fedoraproject.org/pipermail/package-announce/2011-November/068942.html
git.clamav.net/gitweb?p=clamav-devel.git%3Ba=blob_plain%3Bf=ChangeLog%3Bhb=clamav-0.97.2
securitytracker.com/id?1025858
bugzilla.redhat.com/show_bug.cgi?id=725694
ubuntu.com/usn/USN-1179-1
Show 33 moreShow less
bugzilla.novell.com/show_bug.cgi?id=708263
openwall.com/lists/oss-security/2011/07/26/3
exchange.xforce.ibmcloud.com/vulnerabilities/68785
securityfocus.com/bid/48891
wwws.clamav.net/bugzilla/show_bug.cgi?id=2818
osvdb.org/74181
mandriva.com/security/advisories?name=MDVSA-2011:122
nvd.nist.gov/vuln/detail/CVE-2011-2721
github.com/advisories/GHSA-x69w-v5wv-rxpx
security-tracker.debian.org/tracker/CVE-2011-2721
suse.com/security/cve/CVE-2010-0405