CVE-2012-1458
The Microsoft CHM file parser in ClamAV 0.96.4 and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via a crafted reset interval in the LZXC header of a CHM file. NOTE:
02 Description
The Microsoft CHM file parser in ClamAV 0.96.4 and Sophos Anti-Virus 4.61.0 allows remote attackers to bypass malware detection via a crafted reset interval in the LZXC header of a CHM file. NOTE:
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 73.67% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 99.4% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2012-03-21 10:00Z14 YR AGO
- Last updated
- 2024-08-06 19:01Z2 YR AGO
- Reserved
- 2012-02-29
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 02496f2057ad34c09ae931f28dd6c171c9691cdb7e7faff5f7835699b8c6ad64
05 Affected products
06 References
- lists.opensuse.orgopenSUSE-SU-2012:0833http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00002.html
- www.securityfocus.com20120319 Evasion attacks expoliting file-parsing vulnerabilities in antivirus productshttp://www.securityfocus.com/archive/1/522005
- www.securityfocus.com52611http://www.securityfocus.com/bid/52611
- osvdb.org80473http://osvdb.org/80473
- www.ieee-security.orghttp://www.ieee-security.org/TC/SP2012/program.html
- exchange.xforce.ibmcloud.commultiple-av-chm-header-evasion(74301)https://exchange.xforce.ibmcloud.com/vulnerabilities/74301
- osvdb.org80474http://osvdb.org/80474
- www.mandriva.comMDVSA-2012:094http://www.mandriva.com/security/advisories?name=MDVSA-2012:094
07 Fixed in
Debian 12
- clamav Fixed in 0.97.5+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- clamav Fixed in 0.97.5+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- clamav Fixed in 0.97.5+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.