HOMEVULNERABILITIESCVE-2012-4737
MEDIUM

CVE-2012-4737

CWE-264Published: August 31, 2012· Updated: Jun 16, 2026

6.0
CVSS v3.1

Official Description

channels/chan_iax2.c in Asterisk Open Source 1.8.x before 1.8.15.1 and 10.x before 10.7.1, Certified Asterisk 1.8.11 before 1.8.11-cert7, Asterisk Digiumphones 10.x.x-digiumphones before 10.7.1-digiumphones, and Asterisk Business Edition C.3.x before C.3.7.6 does not enforce ACL rules during certain uses of peer credentials, which allows remote authenticated users to bypass intended outbound-call restrictions by leveraging the availability of these credentials.

NVD Source

Technical Analysis

CVE-2012-4737 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 ComplexityM
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityP
IntegrityP
AvailabilityP
AV:N/AC:M/Au:S/C:P/I:P/A:P

Affected Vendors & Products

digium2 product(s)
asteriskcertified asterisk
Source: NVD CPE · 71 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-2012-013.html
ADVISORYhttp://downloads.asterisk.org/pub/security/AST-2012-013.html

All References (12)

→
http://downloads.asterisk.org/pub/security/AST-2012-013.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/55335
→
http://www.securitytracker.com/id?1027461
→
http://downloads.asterisk.org/pub/security/AST-2012-013.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/55335
→
http://www.securitytracker.com/id?1027461

Quick Facts

CVE IDCVE-2012-4737
CVSS Score6.0 / 10
SeverityMEDIUM
WeaknessCWE-264
CISA KEVNo
Affected1 vendor(s)
PublishedAug 31, 2012

Related CVEs (CWE-264)

CVE-2008-7115
10.0
CVE-2011-5010
10.0
CVE-2005-0735
10.0
CVE-2014-9583
10.0
CVE-2008-1242
10.0
CVE-2008-1247
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2012-4737 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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