CVE-2011-2721
ClamAV Off-by-One Error Denial of Service
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.
INFO
Published Date :
Aug. 5, 2011, 9:55 p.m.
Last Modified :
April 11, 2025, 12:51 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.9
Exploitability Score :
10.0
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2011-2721.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2011-2721 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2011-2721 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://git.clamav.net/gitweb?p=clamav-devel.git%3Ba=blob_plain%3Bf=ChangeLog%3Bhb=clamav-0.97.2 Added Reference http://git.clamav.net/gitweb?p=clamav-devel.git%3Ba=commit%3Bh=4842733eb3f09be61caeed83778bb6679141dbc5 Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2011-November/068940.html Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2011-November/068941.html Added Reference http://lists.fedoraproject.org/pipermail/package-announce/2011-November/068942.html Added Reference http://secunia.com/advisories/45382 Added Reference http://secunia.com/advisories/46717 Added Reference http://securitytracker.com/id?1025858 Added Reference http://www.mandriva.com/security/advisories?name=MDVSA-2011:122 Added Reference http://www.openwall.com/lists/oss-security/2011/07/26/13 Added Reference http://www.openwall.com/lists/oss-security/2011/07/26/3 Added Reference http://www.osvdb.org/74181 Added Reference http://www.securityfocus.com/bid/48891 Added Reference http://www.ubuntu.com/usn/USN-1179-1 Added Reference https://bugzilla.novell.com/show_bug.cgi?id=708263 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=725694 Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/68785 Added Reference https://wwws.clamav.net/bugzilla/show_bug.cgi?id=2818 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 13, 2023
Action Type Old Value New Value Removed Reference http://git.clamav.net/gitweb?p=clamav-devel.git;a=blob_plain;f=ChangeLog;hb=clamav-0.97.2 [No Types Assigned] Removed Reference http://git.clamav.net/gitweb?p=clamav-devel.git;a=commit;h=4842733eb3f09be61caeed83778bb6679141dbc5 [Patch] Added Reference http://git.clamav.net/gitweb?p=clamav-devel.git%3Ba=commit%3Bh=4842733eb3f09be61caeed83778bb6679141dbc5 [No Types Assigned] Added Reference http://git.clamav.net/gitweb?p=clamav-devel.git%3Ba=blob_plain%3Bf=ChangeLog%3Bhb=clamav-0.97.2 [No Types Assigned] -
CVE Modified by [email protected]
Aug. 29, 2017
Action Type Old Value New Value Removed Reference http://xforce.iss.net/xforce/xfdb/68785 [No Types Assigned] Added Reference https://exchange.xforce.ibmcloud.com/vulnerabilities/68785 [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 08, 2011
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2011-2721 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2011-2721
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
3.06 }} -0.15%
score
0.85528
percentile