han_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.
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21 Nov 2024, 01:28
| Type | Values Removed | Values Added |
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| References | () http://downloads.asterisk.org/pub/security/AST-2011-011-1.8.diff - Patch | |
| References | () http://downloads.asterisk.org/pub/security/AST-2011-011.html - Vendor Advisory | |
| References | () http://www.securitytracker.com/id?1025734 - |
Published : 2011-07-06 19:55
Updated : 2025-04-11 00:51
NVD link : CVE-2011-2536
Mitre link : CVE-2011-2536
CVE.ORG link : CVE-2011-2536
JSON object : View
Exposure of Sensitive Information to an Unauthorized Actor