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Vulnerability record · CVE-2013-2686 · published 1 April 2013

CVE-2013-2686: Asterisk open source memory buffer overflow vulnerability

Asterisk · Open Source

main/http.c in the HTTP server in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones does not properly restrict Content-Length values, which allows remote attackers to conduct stack-consumption attacks and cause a denial of service (daemon crash) via a crafted HTTP POST request. NOTE: this vulnerability exists because of an incorrect fix for CVE-2012-5976.

5.0 CVSS 2.0 Medium EPSS 2.1% · top 18.8% CWE-119 · Memory buffer overflow
5.0CVSS 2.0 base score
2.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

main/http.c in the HTTP server in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones does not properly restrict Content-Length values, which allows remote attackers to conduct stack-consumption attacks and cause a denial of service (daemon crash) via a crafted HTTP POST request. NOTE: this vulnerability exists because of an incorrect fix for CVE-2012-5976.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://downloads.asterisk.org/pub/security/AST-2013-002.html Vendor Advisory
http://telussecuritylabs.com/threats/show/TSL20130327-01
https://issues.asterisk.org/jira/browse/ASTERISK-20967
http://downloads.asterisk.org/pub/security/AST-2013-002.html Vendor Advisory
http://telussecuritylabs.com/threats/show/TSL20130327-01
https://issues.asterisk.org/jira/browse/ASTERISK-20967

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Source: NIST National Vulnerability Database (record CVE-2013-2686), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.