CVE-2006-4018
Description
Heap-based buffer overflow in the pefromupx function in libclamav/upx.c in Clam AntiVirus (ClamAV) 0.81 through 0.88.3 allows remote attackers to execute arbitrary code via a crafted UPX packed file containing sections with large rsize values.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Clam Anti-Virus ClamAV 0.88.x - UPX Compressed PE File Heap Buffer Overflow
source: https://www.securityfocus.com/bid/19381/info
ClamAV is prone to a heap buffer-overflow vulnerability because it fails to properly bounds-check user-supplied data before copying it to an insufficiently sized memory buffer.
This issue occurs when the application attempts to handle compressed UPX files.
Exploiting this issue could allow attacker-supplied machine code to execute in the context of the affected application. The issue would occur when the malformed file is scanned manually or automatically in deployments such as email gateways.
ClamAV versions 0.88.2 and 0.88.3 are vulnerable to this issue; prior versions may also be affected.
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/28348.exeOS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0.88.4-1 |
| sid | Fixed | 0.88.4-1 |
| forky | Fixed | 0.88.4-1 |
| bullseye | Fixed | 0.88.4-1 |
| bookworm | Fixed | 0.88.4-1 |
References
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.