CVE-2017-0376

moderate-risk
Published 2017-06-09

The hidden-service feature in Tor before 0.3.0.8 allows a denial of service (assertion failure and daemon exit) in the connection_edge_process_relay_cell function via a BEGIN_DIR cell on a rendezvous circuit.

Do I need to act?

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0.82% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (3)

Tor

Affected Vendors

Torproject Debian

References (8)

Third Party Advisory http://www.debian.org/security/2017/dsa-3877
Issue Tracking https://github.com/torproject/tor/commit/56a7c5bc15e0447203a491c1ee37de9939ad1dc...
Mailing List https://lists.torproject.org/pipermail/tor-announce/2017-June/000131.html
Issue Tracking https://trac.torproject.org/projects/tor/ticket/22494
Third Party Advisory http://www.debian.org/security/2017/dsa-3877
Issue Tracking https://github.com/torproject/tor/commit/56a7c5bc15e0447203a491c1ee37de9939ad1dc...
Mailing List https://lists.torproject.org/pipermail/tor-announce/2017-June/000131.html
Issue Tracking https://trac.torproject.org/projects/tor/ticket/22494
38
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 3/34 · Minimal
Exposure 9/34 · Low