NVD Vulnerability Detail
Search Exploit, PoC
CVE-2011-2536
Summary

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.

Publication Date July 7, 2011, 4:55 a.m.
Registration Date Jan. 28, 2021, 4:38 p.m.
Last Update Nov. 21, 2024, 10:28 a.m.
CVSS2.0 : MEDIUM
Score 5.0
Vector AV:N/AC:L/Au:N/C:P/I:N/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC) 低
攻撃前の認証要否(Au) 不要
機密性への影響(C) 低
完全性への影響(I) なし
可用性への影響(A) なし
Get all privileges. いいえ
Get user privileges いいえ
Get other privileges いいえ
User operation required いいえ
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:digium:asterisk:1.8.3:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.3:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.2.4:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:beta2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.3:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.1.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.4.3:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:beta4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.4:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:rc5:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.3.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:beta3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:beta5:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.4:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.3.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.3:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.4.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.2.3:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.3.3:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.4:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.2.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.1:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.1.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.2.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.4:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:beta1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.0:rc4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.8.4.1:*:*:*:*:*:*:*
Configuration2 or higher or less more than less than
cpe:2.3:a:digium:asterisk:1.6.2.16.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.0:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.0:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.0:rc4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.4:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.6:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.0:rc5:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.0:rc7:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.16:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.17:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.1:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.16:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.15:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.17:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.18.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.6:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.17.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.0:rc8:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.3:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.17:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.16.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.17:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.18:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.5:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.17.3:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.18:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.0:rc6:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.6:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.6.2.17.2:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:a:digium:asterisk:1.4.37:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26.3:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.5:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.22:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.27:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.36:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26:rc4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.28:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.27:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.27.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26:rc5:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.0:beta4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.0:beta2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.35:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.19.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.20:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.16:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.3:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.27:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.19.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.30:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.38:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.38:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.4:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.33:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.23:rc4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.22:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.32:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.31:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.22.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.6:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.33:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.20:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.39:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.22.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.39.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.12.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.41:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.19:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.29:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.20:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.18:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.34:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.21:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.22:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.40:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.10:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.41:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.41.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.35:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.24.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.10.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.16.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.19:rc4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.31:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.33.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.25:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.25:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.11:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.23:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.39.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.7:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.7.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.29:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.22:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.15:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.34:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.31:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.28:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.40:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.19:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.23:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.27:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.25.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.34:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.21.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.19:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.9:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.12:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.37:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.20:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.19:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.13:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.21.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.27:rc4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.40.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.33:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.17:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.40:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.29.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.23:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.22:rc4:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.22:rc5:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.40.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.21:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26:rc6:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.32:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.39:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.14:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.20.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.24:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.0:beta1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.40:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.24:rc1:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.26:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.16.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.23.2:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.27:rc5:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.30:rc2:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.23.1:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.23:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.8:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.30:rc3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.36:*:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.0:beta3:*:*:*:*:*:*
cpe:2.3:a:digium:asterisk:1.4.21:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:a:digium:asterisk:c.3.1.0:-:business:*:*:*:*:*
cpe:2.3:a:digium:asterisk:c.3.6.2:-:business:*:*:*:*:*
cpe:2.3:a:digium:asterisk:c.3.1.1:-:business:*:*:*:*:*
cpe:2.3:a:digium:asterisk:c.3.2.2:-:business:*:*:*:*:*
cpe:2.3:a:digium:asterisk:c.3.6.4:-:business:*:*:*:*:*
cpe:2.3:a:digium:asterisk:c.3.0:-:business:*:*:*:*:*
cpe:2.3:a:digium:asterisk:c.3.6.3:-:business:*:*:*:*:*
cpe:2.3:a:digium:asterisk:c.3.2.3:-:business:*:*:*:*:*
cpe:2.3:a:digium:asterisk:c.3.3.2:-:business:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Asterisk Open Source の chan_sip.c におけるアカウント名を列挙される脆弱性
Title Asterisk Open Source の chan_sip.c におけるアカウント名を列挙される脆弱性
Summary

Asterisk Open Source および Asterisk Business Edition の SIP チャンネルドライバの chan_sip.c には、alwaysauthreject オプションを無視し、およびユーザアカウントの有無により変更される無効な SIP リクエストに対して異なるレスポンス生成するため、アカウント名を列挙される脆弱性が存在します。

Possible impacts 第三者により、一連のリクエストを介して、アカウント名を列挙される可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date June 28, 2011, midnight
Registration Date March 27, 2012, 6:43 p.m.
Last Update March 27, 2012, 6:43 p.m.
Affected System
Digium
Asterisk Asterisk 1.4.41.1 未満の 1.4.x、1.6.2.18.2 未満の 1.6.2.x、1.8.4.4 未満の 1.8.x、および Business Edition C.3.7.3 未満の C.3.x
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
ベンダー情報
Change Log
No Changed Details Date of change
0 [2012年03月27日]
  掲載		 Feb. 17, 2018, 10:37 a.m.