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CVE Record

CVE-2013-5641: The SIP channel driver (channels/chan_sip.c) in Asterisk Open Source 1.8.17.x through 1.8.22.x, 1.8.23.x be...

The SIP channel driver (channels/chan_sip.c) in Asterisk Open Source 1.8.17.x through 1.8.22.x, 1.8.23.x before 1.8.23.1, and 11.x before 11.5.1 and Certified Asterisk 1.8.15 before 1.8.15-cert3 and 11.2 before 11.2-cert2 allows remote attackers to cause a denial of service (NULL pointer dereference, segmentation fault, and daemon crash) via an ACK with SDP to a previously terminated channel. NOTE: some of these details are obtained from third party information.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This flaw can crash affected Asterisk SIP services when they process a late SIP ACK containing SDP for a channel that has already ended. For businesses using affected Asterisk versions, the main risk is phone service disruption, not data theft or system takeover based on the supplied sources. Exposure is likely limited to organizations running affected Asterisk Open Source 1.8.17.x-1.8.23.0, 11.x before 11.5.1, or affected Certified Asterisk releases with SIP reachable from untrusted networks. Treat this as an availability risk for voice infrastructure. Prioritize remediation where Asterisk handles business-critical calling or exposes SIP externally. It is not supported by the supplied evidence as a data breach or remote code execution issue. Mitigation focus: Upgrade Asterisk Open Source to 1.8.23.1 or 11.5.1 or later.; Upgrade Certified Asterisk to 1.8.15-cert3 or 11.2-cert2 or later.; Apply relevant distribution vendor security updates, such as Debian DSA-2749 where applicable..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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