CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
AI Score
Confidence
High
EPSS
Percentile
78.9%
Tor before 0.2.4.23 and 0.2.5 before 0.2.5.6-alpha maintains a circuit after an inbound RELAY_EARLY cell is received by a client, which makes it easier for remote attackers to conduct traffic-confirmation attacks by using the pattern of RELAY and RELAY_EARLY cells as a means of communicating information about hidden service names.
Vendor | Product | Version | CPE |
---|---|---|---|
torproject | tor | * | cpe:2.3:a:torproject:tor:*:alpha:*:*:*:*:*:* |
torproject | tor | 0.0.2 | cpe:2.3:a:torproject:tor:0.0.2:*:*:*:*:*:*:* |
torproject | tor | 0.0.2 | cpe:2.3:a:torproject:tor:0.0.2:pre13:*:*:*:*:*:* |
torproject | tor | 0.0.2 | cpe:2.3:a:torproject:tor:0.0.2:pre14:*:*:*:*:*:* |
torproject | tor | 0.0.2 | cpe:2.3:a:torproject:tor:0.0.2:pre15:*:*:*:*:*:* |
torproject | tor | 0.0.2 | cpe:2.3:a:torproject:tor:0.0.2:pre16:*:*:*:*:*:* |
torproject | tor | 0.0.2 | cpe:2.3:a:torproject:tor:0.0.2:pre17:*:*:*:*:*:* |
torproject | tor | 0.0.2 | cpe:2.3:a:torproject:tor:0.0.2:pre18:*:*:*:*:*:* |
torproject | tor | 0.0.2 | cpe:2.3:a:torproject:tor:0.0.2:pre19:*:*:*:*:*:* |
torproject | tor | 0.0.2 | cpe:2.3:a:torproject:tor:0.0.2:pre20:*:*:*:*:*:* |
secunia.com/advisories/60084
secunia.com/advisories/60647
blog.torproject.org/blog/tor-security-advisory-relay-early-traffic-confirmation-attack
lists.torproject.org/pipermail/tor-announce/2014-July/000093.html
lists.torproject.org/pipermail/tor-announce/2014-July/000094.html
lists.torproject.org/pipermail/tor-talk/2014-July/034180.html
trac.torproject.org/projects/tor/ticket/1038