What’s Vulnerable › Vulnerabilities

CVE-2013-1864

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2014-05-23 · updated 2026-06-16
• Weakness: CWE-119

Description

The Portable Tool Library (aka PTLib) before 2.10.10, as used in Ekiga before 4.0.1, does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted PXML document containing a large number of nested entity references, aka a "billion laughs attack."

Affected products

• Gnome Ekiga: through 4.0.0
• Opalvoip Portable Tool Library: 2.10.1, 2.10.2, 2.10.7, 2.10.9
• Suse Linux Enterprise Desktop: 11.0-sp3
• Suse Linux Enterprise Software Development Kit: 11.0-sp3

References

• http://lists.fedoraproject.org/pipermail/package-announce/2013-March/099553.html
• http://osvdb.org/91439
• http://seclists.org/oss-sec/2013/q1/674
• http://secunia.com/advisories/52659
• http://sourceforge.net/p/opalvoip/code/28856
• http://www.ekiga.org/news/2013-02-21/ekiga-4.0.1-stable-available
• http://www.securityfocus.com/bid/58520
• https://exchange.xforce.ibmcloud.com/vulnerabilities/82885
• https://www.suse.com/support/update/announcement/2014/suse-su-20140237-1.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-March/099553.html
• http://osvdb.org/91439
• http://seclists.org/oss-sec/2013/q1/674

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