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Vulnerability details: VCID-8ac7-92x2-aaar
Vulnerability ID VCID-8ac7-92x2-aaar
Aliases CVE-2011-2665
Summary reqresp_parser.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.4.3 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a SIP packet with a Contact header that lacks a < (less than) character.
Status Published
Exploitability 0.5
Weighted Severity 4.5
Risk 2.2
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.02315 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
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epss 0.02315 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.02315 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
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epss 0.02315 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.02315 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.02315 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
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epss 0.02315 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.02315 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
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epss 0.02315 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07308 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
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epss 0.07308 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.07524 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
epss 0.11481 https://api.first.org/data/v1/epss?cve=CVE-2011-2665
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2011-2665
Reference id Reference type URL
http://downloads.asterisk.org/pub/security/AST-2011-009-1.8.diff
http://downloads.asterisk.org/pub/security/AST-2011-009.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062628.html
https://api.first.org/data/v1/epss?cve=CVE-2011-2665
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2665
http://secunia.com/advisories/45048
http://secunia.com/advisories/45201
http://secunia.com/advisories/45239
http://www.debian.org/security/2011/dsa-2276
631445 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631445
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cpe:2.3:a:digium:asterisk:1.8.4:rc3:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:digium:asterisk:1.8.4:rc3:*:*:*:*:*:*
CVE-2011-2665 https://nvd.nist.gov/vuln/detail/CVE-2011-2665
GLSA-201110-21 https://security.gentoo.org/glsa/201110-21
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2011-2665
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Exploit Prediction Scoring System (EPSS)
Percentile 0.83338
EPSS Score 0.02315
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.