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CVE Record

CVE-2011-2529: chan_sip.c in the SIP channel driver in Asterisk Open Source 1.6.x before 1.6.2.18.1 and 1.8.x before 1.8.4...

chan_sip.c in the SIP channel driver in Asterisk Open Source 1.6.x before 1.6.2.18.1 and 1.8.x before 1.8.4.3 does not properly handle '\0' characters in SIP packets, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted packet.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2011-2529 affects older Asterisk Open Source SIP handling. A specially crafted SIP packet containing null characters can corrupt memory and crash the service. For organizations still running these legacy Asterisk branches, the business risk is phone system disruption, not confirmed data theft or proven code execution from the supplied sources. Exposure is most likely where legacy Asterisk 1.6.x or 1.8.x systems still process SIP traffic, especially if SIP is reachable from untrusted networks. The supplied affected-product metadata is sparse, so confirm against installed Asterisk versions and package advisories. Treat this as a legacy telephony availability risk. Prioritize if Asterisk still supports business phone service or receives external SIP traffic. If no affected versions remain, document the absence of exposure and close as not applicable. Mitigation focus: Upgrade Asterisk 1.6.x to 1.6.2.18.1 or later.; Upgrade Asterisk 1.8.x to 1.8.4.3 or later.; Review Debian and Fedora advisories for packaged update availability..

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

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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

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

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

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