CVE-2014-5117
mediumpriority · track · 24EPSS 0.021 · 82 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (112)
Products and version ranges known to be affected.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (19)
External citations — patches, advisories, analysis.
- https://blog.torproject.org/blog/tor-security-advisory-relay-early-traffic-confirmation-attackcnnvd
- https://lists.torproject.org/pipermail/tor-announce/2014-July/000093.htmlcnnvd
- https://lists.torproject.org/pipermail/tor-announce/2014-July/000094.htmlcnnvd
- https://lists.torproject.org/pipermail/tor-talk/2014-July/034180.htmlcnnvd
- https://trac.torproject.org/projects/tor/ticket/1038cnnvd
- http://secunia.com/advisories/60084enisa_euvd
- http://secunia.com/advisories/60647enisa_euvd
- https://blog.torproject.org/blog/tor-security-advisory-relay-early-traffic-confirmation-attackenisa_euvd
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