HOMEVULNERABILITIESCVE-2012-3812
MEDIUM

CVE-2012-3812

CWE-399Published: July 9, 2012· Updated: Jun 16, 2026

4.0
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2012-3812 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityNone
IntegrityNone
AvailabilityP
AV:N/AC:L/Au:S/C:N/I:N/A:P

Affected Vendors & Products

digium3 product(s)
asteriskasteriskecertified asterisk
Source: NVD CPE · 50 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://downloads.asterisk.org/pub/security/AST-2012-011.html
ADVISORYhttp://downloads.asterisk.org/pub/security/AST-2012-011.html

All References (12)

→
http://downloads.asterisk.org/pub/security/AST-2012-011.htmlVendor Advisory
→
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.htmlVendor Advisory
→
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

Quick Facts

CVE IDCVE-2012-3812
CVSS Score4.0 / 10
SeverityMEDIUM
WeaknessCWE-399
CISA KEVNo
Affected1 vendor(s)
PublishedJul 9, 2012

Related CVEs (CWE-399)

CVE-2007-4689
10.0
CVE-2007-5656
10.0
CVE-2006-1790
10.0
CVE-2007-5329
10.0
CVE-2007-6044
10.0
CVE-2008-0040
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2012-3812 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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