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    CVE-2013-2020

    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.

    Published:May 13, 2013
    Last Modified:Apr 11, 2025
    EPS:May 13, 2013
    EPSS Score:0.10664
    CVSS Score:5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Clamav
    Product
    Clamav
    Vendor
    Suse
    Product
    Linux Enterprise Server

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    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
    http://support.apple.com/kb/HT5880
    http://support.apple.com/kb/HT5892
    http://www.mandriva.com/security/advisories?name=MDVSA-2013:159
    http://www.openwall.com/lists/oss-security/2013/04/25/2
    http://www.openwall.com/lists/oss-security/2013/04/29/20
    http://www.securityfocus.com/bid/59434
    http://www.ubuntu.com/usn/USN-1816-1
    https://bugzilla.clamav.net/show_bug.cgi?id=7055
    https://github.com/vrtadmin/clamav-devel/commit/270e368b99e93aa5447d46c797c92c3f9f39f375
    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
    http://support.apple.com/kb/HT5880
    http://support.apple.com/kb/HT5892
    http://www.mandriva.com/security/advisories?name=MDVSA-2013:159
    http://www.openwall.com/lists/oss-security/2013/04/25/2
    http://www.openwall.com/lists/oss-security/2013/04/29/20
    http://www.securityfocus.com/bid/59434
    http://www.ubuntu.com/usn/USN-1816-1
    https://bugzilla.clamav.net/show_bug.cgi?id=7055
    https://github.com/vrtadmin/clamav-devel/commit/270e368b99e93aa5447d46c797c92c3f9f39f375

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High