Vulnerability CVE-2008-2119


Published: 2008-06-04   Modified: 2012-02-12

Description:
Asterisk Open Source 1.0.x and 1.2.x before 1.2.29 and Business Edition A.x.x and B.x.x before B.2.5.3, when pedantic parsing (aka pedanticsipchecking) is enabled, allows remote attackers to cause a denial of service (daemon crash) via a SIP INVITE message that lacks a From header, related to invocations of the ast_uri_decode function, and improper handling of (1) an empty const string and (2) a NULL pointer.

See advisories in our WLB2 database:
Topic
Author
Date
High
Remote Crash Vulnerability in SIP channel driver when run in pedantic mode
Asterisk Securit...
04.06.2008

Type:

CWE-20

(Improper Input Validation)

Vendor: Asterisk
Product: Asterisk business edition 
Version:
b2.5.2
b2.5.1
b.2.5.0
b.2.3.4
b.2.3.3
b.2.3.2
b.2.3.1
b.2.2.1
b.2.2.0
b.1.3.3
b.1.3.2
Product: Open source 
Version:
1.2.28
1.2.27
1.2.26.2
1.2.26.1
1.2.26
1.2.25
1.2.24
1.2.23
1.2.22
1.2.21.1
1.2.21
1.2.20
1.2.2
1.2.19
1.2.18
1.2.17
1.2.16
1.2.15
1.2.14
1.2.13
1.2.12.1
1.2.12
1.2.11
1.2.10
1.2.1
1.2.0beta2
1.2.0beta1
1.2.0
1.0.9
1.0.8
1.0.7
1.0.6
1.0.5
1.0.4
1.0.3
1.0.2
1.0.12
1.0.11.1
1.0.11
1.0.1
1.0.0
1.0

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial

 References:
http://bugs.digium.com/view.php?id=12607
http://downloads.digium.com/pub/security/AST-2008-008.html
http://security.gentoo.org/glsa/glsa-200905-01.xml
http://svn.digium.com/view/asterisk?view=rev&revision=120109
http://www.securityfocus.com/archive/1/493020/100/0/threaded
http://www.securitytracker.com/id?1020166
http://www.vupen.com/english/advisories/2008/1731
https://exchange.xforce.ibmcloud.com/vulnerabilities/42823
https://www.exploit-db.com/exploits/5749

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