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CVE Record

CVE-2011-1147: Multiple stack-based and heap-based buffer overflows in the (1) decode_open_type and (2) udptl_rx_packet fu...

Multiple stack-based and heap-based buffer overflows in the (1) decode_open_type and (2) udptl_rx_packet functions in main/udptl.c in Asterisk Open Source 1.4.x before 1.4.39.2, 1.6.1.x before 1.6.1.22, 1.6.2.x before 1.6.2.16.2, and 1.8 before 1.8.2.4; Business Edition C.x.x before C.3.6.3; AsteriskNOW 1.5; and s800i (Asterisk Appliance), when T.38 support is enabled, allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted UDPTL packet.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is an old Asterisk telephony flaw in fax-over-IP handling. If T.38 support is enabled, a crafted UDPTL packet can crash affected systems and may allow arbitrary code execution. Business impact is highest for internet-exposed PBX or voice infrastructure still running the listed legacy Asterisk versions. Exposure is limited to legacy Asterisk deployments with T.38 support enabled, especially PBX, SIP gateway, fax-over-IP, or appliance systems reachable over untrusted networks. Modern or patched Asterisk versions should not be assumed affected from these sources. Prioritize remediation for any exposed legacy Asterisk system because the issue can disrupt telephony and may enable code execution. If no affected versions or T.38-enabled systems remain, document that evidence and treat as historical cleanup. Mitigation focus: Upgrade Asterisk to a fixed version or later vendor-supported release.; Disable T.38 support if it is not required for business operations.; Restrict UDPTL/SIP exposure to trusted networks and providers..

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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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