The ENSURE_BITS macro in mszipd.c for Clam AntiVirus (ClamAV) 0.83, and other versions…
Priority LOW 16Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The ENSURE_BITS macro in mszipd.c for Clam AntiVirus (ClamAV) 0.83, and other versions vefore 0.86, allows remote attackers to cause a denial of service (CPU consumption by infinite loop) via a cabinet (CAB) file with the cffile_FolderOffset field set to 0xff, which causes a zero-length read.
Why it matters now
EPSS 0.01615 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:clam_anti-virus:clamav:0.83:*:*:*:*:*:*:* | 0.83 | Vulnerable | Clam Anti-virus |
| cpe:2.3:a:clam_anti-virus:clamav:0.84_rc1:*:*:*:*:*:*:* | 0.84_rc1 | Vulnerable | Clam Anti-virus |
| cpe:2.3:a:clam_anti-virus:clamav:0.84_rc2:*:*:*:*:*:*:* | 0.84_rc2 | Vulnerable | Clam Anti-virus |
| cpe:2.3:a:clam_anti-virus:clamav:0.85:*:*:*:*:*:*:* | 0.85 | Vulnerable | Clam Anti-virus |
| cpe:2.3:a:clam_anti-virus:clamav:0.85.1:*:*:*:*:*:*:* | 0.85.1 | Vulnerable | Clam Anti-virus |
- cpe:2.3:a:clam_anti-virus:clamav:0.83:*:*:*:*:*:*:* Versions 0.83 Vulnerable ·Clam Anti-virus
- cpe:2.3:a:clam_anti-virus:clamav:0.84_rc1:*:*:*:*:*:*:* Versions 0.84_rc1 Vulnerable ·Clam Anti-virus
- cpe:2.3:a:clam_anti-virus:clamav:0.84_rc2:*:*:*:*:*:*:* Versions 0.84_rc2 Vulnerable ·Clam Anti-virus
- cpe:2.3:a:clam_anti-virus:clamav:0.85:*:*:*:*:*:*:* Versions 0.85 Vulnerable ·Clam Anti-virus
- cpe:2.3:a:clam_anti-virus:clamav:0.85.1:*:*:*:*:*:*:* Versions 0.85.1 Vulnerable ·Clam Anti-virus
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2005-1923
- 2026-10-03 Alias added: GHSA-9rx9-vrwp-7vq4
References
More Clam Anti-virus Clamav vulnerabilities
- TI-2007-04414 clamav-milter in ClamAV before 0.91.2, when run in black hole mode, allows remote… CVSS 2.0HIGH 7.6
- TI-2008-01054 Buffer overflow in the cli_scanpe function in libclamav (libclamav/pe.c) for ClamAV 0.92… CVSS 2.0HIGH 10.0
- TI-2008-00296 Integer overflow in the cli_scanpe function in libclamav in ClamAV before 0.92.1, as used… CVSS 2.0HIGH 10.0
- TI-2006-04039 Integer overflow in ClamAV 0.88.1 and 0.88.4, and other versions before 0.88.5, allows… CVSS 2.0HIGH 7.5
- TI-2008-04803 Off-by-one error in the get_unicode_name function (libclamav/vba_extract.c) in Clam… CVSS 2.0HIGH 9.3
- TI-2007-06042 Integer overflow in libclamav in ClamAV before 0.92 allows remote attackers to execute… CVSS 2.0HIGH 7.5
Sources
- CVE-2005-1923 · CVE Program
- CVE-2005-1923 · NVD
- FIRST EPSS
- GHSA-9rx9-vrwp-7vq4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences