What’s Vulnerable › Vulnerabilities

CVE-2012-3812

• 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

Double free vulnerability in apps/app_voicemail.c in Asterisk Open Source 1.8.x before 1.8.13.1 and 10.x before 10.5.2, Certified Asterisk 1.8.11-certx before 1.8.11-cert4, and Asterisk Digiumphones 10.x.x-digiumphones before 10.5.2-digiumphones allows remote authenticated users to cause a denial of service (daemon crash) by establishing multiple voicemail sessions and accessing both the Urgent mailbox and the INBOX mailbox.

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 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-2012-011.html
• http://secunia.com/advisories/50687
• http://secunia.com/advisories/50756
• http://www.debian.org/security/2012/dsa-2550
• http://www.securityfocus.com/bid/54317
• https://issues.asterisk.org/jira/browse/ASTERISK-20052
• http://downloads.asterisk.org/pub/security/AST-2012-011.html
• http://secunia.com/advisories/50687
• http://secunia.com/advisories/50756
• http://www.debian.org/security/2012/dsa-2550
• http://www.securityfocus.com/bid/54317
• https://issues.asterisk.org/jira/browse/ASTERISK-20052

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