CVE-2011-2536

CVSS V2 Medium 5 CVSS V3 None
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.
Overview
  • CVE ID
  • CVE-2011-2536
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Modified
  • Published Version
  • 2011-07-06T19:55:03
  • Last Modified Date
  • 2011-09-07T03:17:36
Weakness Enumerations
CWE URL
CWE-200 http://cwe.mitre.org/data/definitions/200.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:digium:asterisk:1.8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.0:beta1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.0:beta2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.0:beta3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.0:beta4:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.0:beta5:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.0:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.0:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.0:rc4:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.0:rc5:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.1:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.1.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.1.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.2.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.2.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.2.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.2.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.3:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.3:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.3:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.3.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.3.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.3.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.4:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.4:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.4:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.4.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.4.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.8.4.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.0:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.0:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.0:rc4:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.0:rc5:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.0:rc6:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.0:rc7:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.0:rc8:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.1:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.3:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.6:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.6:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.15:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.16:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.16:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.16.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.16.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.17:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.17:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.17:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.17:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.17.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.17.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.17.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.18:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.18:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.6.2.18.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.0:beta1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.0:beta2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.0:beta3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.0:beta4:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.7.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.8:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.9:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.10:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.10.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.11:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.12:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.12.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.13:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.14:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.15:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.16:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.16.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.16.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.17:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.18:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.19:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.19:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.19:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.19:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.19:rc4:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.19.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.19.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.20:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.20:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.20:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.20:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.20.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.21:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.21:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.21:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.21.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.21.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.22:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.22:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.22:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.22:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.22:rc4:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.22:rc5:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.22.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.22.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.23:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.23:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.23:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.23:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.23:rc4:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.23.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.23.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.24:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.24:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.24.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.25:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.25:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.25.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26:rc4:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26:rc5:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26:rc6:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.26.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.27:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.27:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.27:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.27:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.27:rc4:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.27:rc5:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.27.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.28:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.28:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.29:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.29:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.29.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.30:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.30:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.30:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.31:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.31:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.31:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.32:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.32:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.33:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.33:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.33:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.33.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.34:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.34:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.34:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.35:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.35:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.36:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.36:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.37:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.37:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.38:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.38:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.39:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.39:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.39.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.39.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.40:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.40:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.40:rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.40:rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.40.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.40.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.41:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.41:rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:1.4.41.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:c.3.0:-:business:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:c.3.1.0:-:business:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:c.3.1.1:-:business:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:c.3.2.2:-:business:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:c.3.2.3:-:business:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:c.3.3.2:-:business:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:c.3.6.2:-:business:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:c.3.6.3:-:business:*:*:*:*:* 1 OR
cpe:2.3:a:digium:asterisk:c.3.6.4:-:business:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
References
Reference URL Reference Tags
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2011-2536
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-2536
History
Created Old Value New Value Data Type Notes
2022-05-10 10:58:51 Added to TrackCVE