CVE-2013-2020

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-05-13 · updated 2026-06-16
Weakness: CWE-189

Description

Integer underflow in the cli_scanpe function in pe.c in ClamAV before 0.97.8 allows remote attackers to cause a denial of service (crash) via a skewed offset larger than the size of the PE section in a UPX packed executable, which triggers an out-of-bounds read.

Affected products

Canonical Ubuntu Linux: 10.04, 11.10, 12.04, 12.10, 13.04
Cisco ClamAV: through 0.97.7; 0.9-rc1, 0.90, 0.90-rc1, 0.90-rc1.1, 0.90-rc2, 0.90-rc3 (+46)
SUSE Linux Enterprise Server: 11.0-sp1, 11.0-sp2

References

http://blog.clamav.net/2013/04/clamav-0978-has-been-released.html
http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.html
http://lists.apple.com/archives/security-announce/2013/Sep/msg00004.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-June/109514.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-June/109639.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-June/109652.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105575.html
http://lists.opensuse.org/opensuse-security-announce/2014-12/msg00006.html
http://lists.opensuse.org/opensuse-updates/2013-06/msg00018.html
http://lists.opensuse.org/opensuse-updates/2013-06/msg00020.html
http://secunia.com/advisories/53150
http://secunia.com/advisories/53182

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