HOMEVULNERABILITIESCVE-2013-5642
MEDIUM

CVE-2013-5642

CWE-20Published: September 9, 2013· Updated: Jun 16, 2026

5.0
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2013-5642 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:N/C:N/I:N/A:P

Affected Vendors & Products

digium3 product(s)
asteriskasterisk digiumphonescertified asterisk
Source: NVD CPE · 32 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

PATCHhttp://downloads.asterisk.org/pub/security/AST-2013-005.html
PATCHhttp://downloads.asterisk.org/pub/security/AST-2013-005.html
ADVISORYhttp://secunia.com/advisories/54534
ADVISORYhttp://secunia.com/advisories/54534

All References (20)

→
http://archives.neohapsis.com/archives/bugtraq/2013-08/0174.html
→
http://downloads.asterisk.org/pub/security/AST-2013-005.htmlPatch · Vendor Advisory
→
http://osvdb.org/96690
→
http://secunia.com/advisories/54534Vendor Advisory
→
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.htmlPatch · Vendor Advisory
→
http://osvdb.org/96690
→
http://secunia.com/advisories/54534Vendor Advisory
→
http://secunia.com/advisories/54617

Quick Facts

CVE IDCVE-2013-5642
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedSep 9, 2013

Related CVEs (CWE-20)

CVE-2011-1018
10.0
CVE-2009-1669
10.0
CVE-2011-0923
10.0
CVE-2007-4915
10.0
CVE-2011-0285
10.0
CVE-2009-1361
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2013-5642 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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