What’s Vulnerable › Vulnerabilities

CVE-2012-3863

• Severity: medium (CVSS 4.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2012-07-09 · updated 2026-06-16
• Weakness: CWE-399

Description

channels/chan_sip.c in Asterisk Open Source 1.8.x before 1.8.13.1 and 10.x before 10.5.2, Asterisk Business Edition C.3.x before C.3.7.5, Certified Asterisk 1.8.11-certx before 1.8.11-cert4, and Asterisk Digiumphones 10.x.x-digiumphones before 10.5.2-digiumphones does not properly handle a provisional response to a SIP reINVITE request, which allows remote authenticated users to cause a denial of service (RTP port exhaustion) via sessions that lack final responses.

Affected products

• Digium Asterisk: 1.8.0, 1.8.0-beta1, 1.8.0-beta2, 1.8.0-beta3, 1.8.0-beta4, 1.8.0-beta5 (+92)
• Digium Asterisk Business Edition: c.3.1, c.3.3, c.3.7.4
• Digium Asteriske: 1.8.8.0-rc4, 1.8.9.1
• Digium Certified Asterisk: 1.8.11-cert, 1.8.11-cert1, 1.8.11-cert2, 1.8.11-cert3

References

• http://downloads.asterisk.org/pub/security/AST-2012-010.html
• http://secunia.com/advisories/50687
• http://secunia.com/advisories/50756
• http://www.debian.org/security/2012/dsa-2550
• http://www.securityfocus.com/bid/54327
• https://issues.asterisk.org/jira/browse/ASTERISK-19992
• http://downloads.asterisk.org/pub/security/AST-2012-010.html
• http://secunia.com/advisories/50687
• http://secunia.com/advisories/50756
• http://www.debian.org/security/2012/dsa-2550
• http://www.securityfocus.com/bid/54327
• https://issues.asterisk.org/jira/browse/ASTERISK-19992

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