CVE-2009-1270

Severity: high (CVSS 7.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-04-08 · updated 2026-06-16
Weakness: CWE-835

Description

libclamav/untar.c in ClamAV before 0.95 allows remote attackers to cause a denial of service (infinite loop) via a crafted TAR file that causes (1) clamd and (2) clamscan to hang.

Affected products

Canonical Ubuntu Linux: 8.10
Cisco ClamAV: before 0.95 — fixed in 0.95
Debian Linux: 4.0, 5.0

How to fix

Upgrade to a fixed version: Cisco ClamAV 0.95. Check the vendor advisory for mitigations.

References

http://lists.apple.com/archives/security-announce/2009/Sep/msg00004.html
http://osvdb.org/53461
http://secunia.com/advisories/34716
http://secunia.com/advisories/36701
http://support.apple.com/kb/HT3865
http://www.debian.org/security/2009/dsa-1771
http://www.mandriva.com/security/advisories?name=MDVSA-2009:097
http://www.openwall.com/lists/oss-security/2009/04/07/6
http://www.securityfocus.com/bid/34357
http://www.ubuntu.com/usn/usn-754-1
http://www.vupen.com/english/advisories/2009/0934
https://exchange.xforce.ibmcloud.com/vulnerabilities/49846

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