NVD Vulnerability Detail
Search Exploit, PoC
CVE-2011-2768
Summary

Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected.

Publication Date Dec. 23, 2011, 12:59 p.m.
Registration Date Jan. 28, 2021, 4:39 p.m.
Last Update Nov. 21, 2024, 10:28 a.m.
CVSS2.0 : MEDIUM
Score 5.8
Vector AV:N/AC:M/Au:N/C:P/I:P/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC) 中
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) 低
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:tor:tor:0.2.1.1.14:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.10:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.17:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.26:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.2:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.4:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.1:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.9:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.6.2:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.12:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.8:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.18:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.8:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.9:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.16:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.30:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.5:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.23:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.27:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.5:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.11:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.6:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.8:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.10:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.19:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.18:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.2:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.10:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.22:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.11:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.8:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.7:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.5:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.19:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.10:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.25:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.9:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.31:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.14:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.8:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.2:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.28:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.18:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.13:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.28:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.17:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.5:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.12:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.3:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.5:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.35:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.16:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.17:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.26:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.17:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.8:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.1:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.9:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.25:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.17:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.29:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.14:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.19:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.1:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.24:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.2:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.25:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.26:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.12:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.7:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.3:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.6:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.7:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.9:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.15:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.29:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.27:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.8:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.1:alpha-cvs:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.18:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.29:beta:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.7:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.4:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.13:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.19:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.3:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.6:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.3:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.27:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.14:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.12:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.14:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.23:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.3:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.6:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.14:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.32:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.12:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.16:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:*:*:*:*:*:*:*:* 0.2.2.33
cpe:2.3:a:tor:tor:0.2.0.15:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.12:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.9:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.1:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.10:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.3:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.6:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.18:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.4:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.15:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.2:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.4:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.21:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.4:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.29:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.11:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.8:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.19:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.15:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.19:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.7:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.6.1:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.19:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.13:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.22:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.2:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.3:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.14:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.7:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.24:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.2:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.6:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.3:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.18:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.22:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.33:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.34:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.21:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.10:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.21:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.31:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.5:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.9:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.28:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.22:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.10:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.32:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.7.3:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.8:beta:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.7.2:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.20:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.20:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.13:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.16:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.20:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.16:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.16:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.12:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.12:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.1:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.15:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.21:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.10:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.4:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.13:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.13:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.11:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.4:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.7:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.31:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.7:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.1:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.20:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.23:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.17:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.3:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.7:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.11:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.10:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.8.1:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.4:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.2:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.26:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.23:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.20:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.18:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.5:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.25:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.24:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.0.9.6:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.9:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.13:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.15:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.2.15:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.30:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.6:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.0.11:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.11:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.17:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.29:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.12:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.2.5:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.30:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.1.1.9:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.6:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.8:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.16:alpha:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:tor:tor:0.2.0.5:alpha:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Tor における匿名化のためのプロパティを無効にされる脆弱性
Title Tor における匿名化のためのプロパティを無効にされる脆弱性
Summary

Tor は、クライアントまたはブリッジとして構成されるとき、OR 接続中に発信されるデータに TLS の証明書チェーンが含まれるため、匿名化のためのプロパティを無効にされる脆弱性が存在します。

Possible impacts リモートの中継端末により、該当のチェーンを読み取られ、クライアントまたはブリッジが選択されていたエントリガードのセットを決定されることで、匿名化のためのプロパティを無効に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 Oct. 27, 2011, midnight
Registration Date Dec. 27, 2011, 10:54 a.m.
Last Update Dec. 27, 2011, 10:54 a.m.
Affected System
The Tor Project
Tor 0.2.2.34 未満
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 [2011年12月26日]
  掲載		 Feb. 17, 2018, 10:37 a.m.