What’s Vulnerable › Vulnerabilities

CVE-2013-5642

• Severity: medium (CVSS 5.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 11.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2013-09-09 · updated 2026-06-16
• Weakness: CWE-20

Description

The SIP channel driver (channels/chan_sip.c) in Asterisk Open Source 1.8.x before 1.8.23.1, 10.x before 10.12.3, and 11.x before 11.5.1; Certified Asterisk 1.8.15 before 1.8.15-cert3 and 11.2 before 11.2-cert2; and Asterisk Digiumphones 10.x-digiumphones before 10.12.3-digiumphones allows remote attackers to cause a denial of service (NULL pointer dereference, segmentation fault, and daemon crash) via an invalid SDP that defines a media description before the connection description in a SIP request.

Affected products

• Digium Asterisk: 1.8.17.0, 1.8.17.0-rc1, 1.8.17.0-rc2, 1.8.17.0-rc3, 1.8.18.0, 1.8.18.0-rc1 (+52)
• Digium Asterisk Digiumphones: 10.0.0, 10.0.0-rc1, 10.0.0-rc2, 10.11.0, 10.11.0-rc1, 10.11.0-rc2 (+6)
• Digium Certified Asterisk: 1.8.15, 1.8.15-cert1, 1.8.15-cert1-rc1, 1.8.15-cert1-rc2, 1.8.15-cert1-rc3, 1.8.15-cert2 (+5)

References

• http://archives.neohapsis.com/archives/bugtraq/2013-08/0174.html
• http://downloads.asterisk.org/pub/security/AST-2013-005.html
• http://osvdb.org/96690
• http://secunia.com/advisories/54534
• http://secunia.com/advisories/54617
• http://www.debian.org/security/2013/dsa-2749
• http://www.mandriva.com/security/advisories?name=MDVSA-2013:223
• http://www.securityfocus.com/bid/62022
• http://www.securitytracker.com/id/1028957
• https://issues.asterisk.org/jira/browse/ASTERISK-22007
• http://archives.neohapsis.com/archives/bugtraq/2013-08/0174.html
• http://downloads.asterisk.org/pub/security/AST-2013-005.html

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