National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2011-2536 Detail

Current Description

chan_sip.c in the SIP channel driver in Asterisk Open Source 1.4.x before 1.4.41.2, 1.6.2.x before 1.6.2.18.2, and 1.8.x before 1.8.4.4, and Asterisk Business Edition C.3.x before C.3.7.3, disregards the alwaysauthreject option and generates different responses for invalid SIP requests depending on whether the user account exists, which allows remote attackers to enumerate account names via a series of requests.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://downloads.asterisk.org/pub/security/AST-2011-011.html Vendor Advisory
http://downloads.asterisk.org/pub/security/AST-2011-011-1.8.diff Patch
http://www.securitytracker.com/id?1025734

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:digium:asterisk:1.8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.0:beta1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.0:beta2:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.0:beta3:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.0:beta4:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.0:beta5:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.0:rc2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.0:rc3:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.0:rc4:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.0:rc5:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.1:rc1:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.1.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.1.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.2.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.2.2:*:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.2.3:*:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.2.4:*:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.3:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.3:rc2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.3:rc3:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.3.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.3.2:*:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.8.3.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.4:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.4:rc2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.4:rc3:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.4.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.4.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.8.4.3:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:a:digium:asterisk:1.6.2.0:*:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.6.2.0:rc2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.0:rc3:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.0:rc4:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.0:rc5:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.6.2.0:rc6:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.0:rc7:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.0:rc8:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.1:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.3:rc2:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.6.2.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.6:rc1:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.6.2.6:rc2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.15:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.16:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.16:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.16.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.16.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.17:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.17:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.17:rc2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.17:rc3:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.17.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.17.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.17.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.18:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.18:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.6.2.18.1:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:a:digium:asterisk:1.4.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.0:beta1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.0:beta2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.0:beta3:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.0:beta4:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.7:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.7.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.8:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.9:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.10:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.10.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.11:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.12:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.12.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.13:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.14:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.15:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.16:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.16.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.16.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.17:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.18:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.19:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.19:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.19:rc2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.19:rc3:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.19:rc4:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.19.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:digium:asterisk:1.4.19.2:*:*:*:*:*:*:*
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 cpe:2.3:a:digium:asterisk:1.4.20:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 4 ( hide )

Showing 100 of 198 CPEs, view all CPEs here.

Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2011-2536
NVD Published Date:
07/06/2011
NVD Last Modified:
09/06/2011