CVE-2011-4598: n/a vulnerability

CVE-2011-4598: The handle_request_info function in channels/chan_sip.c in Asterisk Open Source 1.6.2.x before 1.6.2.21 and...

The handle_request_info function in channels/chan_sip.c in Asterisk Open Source 1.6.2.x before 1.6.2.21 and 1.8.x before 1.8.7.2, when automon is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted sequence of SIP requests.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 00:09 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw can let a remote party crash affected Asterisk phone servers if the automon feature is enabled. The impact is service disruption, not data theft based on the supplied sources. Organizations using old Asterisk 1.6.2.x or 1.8.x systems should prioritize confirming whether those systems still exist and are patched. Exposure is most likely on legacy Asterisk Open Source deployments running affected 1.6.2.x or 1.8.x releases with automon enabled and SIP reachable from untrusted networks. Treat this as a legacy telephony availability risk. It is not marked actively exploited, but exposed old PBX systems can be business-critical and disruptive if crashed. Mitigation focus: Upgrade Asterisk to 1.6.2.21, 1.8.7.2, or a vendor-fixed package.; Review Asterisk AST-2011-014 and Debian DSA-2367 guidance for package-specific fixes.; If automon is unnecessary, assess disabling it under vendor-supported configuration guidance..

Prepared: Jun 27, 2026, 17:48 UTC (UTC+00:00)

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: Dec 15, 2011, 02:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

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1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

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