CVE-2017-0376
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.18%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.18% probability · 82th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-617
- Affected
- torproject/tor · debian/debian linux
- Source
- security@debian.org
EPSS 2.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.debian.org/security/2017/dsa-3877Third Party Advisory
- https://github.com/torproject/tor/commit/56a7c5bc15e0447203a491c1ee37de9939ad1dcdIssue Tracking, Patch, Third Party Advisory
- https://lists.torproject.org/pipermail/tor-announce/2017-June/000131.htmlMailing List, Third Party Advisory
- https://trac.torproject.org/projects/tor/ticket/22494Issue Tracking, Third Party Advisory
- http://www.debian.org/security/2017/dsa-3877Third Party Advisory
- https://github.com/torproject/tor/commit/56a7c5bc15e0447203a491c1ee37de9939ad1dcdIssue Tracking, Patch, Third Party Advisory
- https://lists.torproject.org/pipermail/tor-announce/2017-June/000131.htmlMailing List, Third Party Advisory
- https://trac.torproject.org/projects/tor/ticket/22494Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.