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."
CVE-2013-1864
NONECVSS 0.0
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 3%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 85.0%
- KEV
- Not listed
Published
May 23, 2014
Last Modified
May 6, 2026
References (18)
- secalert@redhathttp://lists.fedoraproject.org/pipermail/package-announce/2013-March/099553.html
- secalert@redhathttp://osvdb.org/91439
- secalert@redhathttp://seclists.org/oss-sec/2013/q1/674
- secalert@redhathttp://secunia.com/advisories/52659
- secalert@redhathttp://sourceforge.net/p/opalvoip/code/28856
- secalert@redhathttp://www.ekiga.org/news/2013-02-21/ekiga-4.0.1-stable-available
- secalert@redhathttp://www.securityfocus.com/bid/58520
- secalert@redhathttps://exchange.xforce.ibmcloud.com/vulnerabilities/82885
- secalert@redhathttps://www.suse.com/support/update/announcement/2014/suse-su-20140237-1.html
- af854a3a-2127-422b-91ae-364da2661108http://lists.fedoraproject.org/pipermail/package-announce/2013-March/099553.html
- af854a3a-2127-422b-91ae-364da2661108http://osvdb.org/91439
- af854a3a-2127-422b-91ae-364da2661108http://seclists.org/oss-sec/2013/q1/674
- af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/52659
- af854a3a-2127-422b-91ae-364da2661108http://sourceforge.net/p/opalvoip/code/28856
- af854a3a-2127-422b-91ae-364da2661108http://www.ekiga.org/news/2013-02-21/ekiga-4.0.1-stable-available
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 36× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
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Related CVEs(same CWE)
Same CWE
10 shownCWE-119
Frequently asked(4)
What is CVE-2013-1864?
CVE-2013-1864 is a none vulnerability published on May 23, 2014. 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…
When was CVE-2013-1864 disclosed?
CVE-2013-1864 was first published in the National Vulnerability Database on May 23, 2014, with the most recent update on May 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-1864 actively exploited?
CVE-2013-1864 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2013-1864?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-1864, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2013-1864
Is Your Infrastructure Affected by CVE-2013-1864?
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