CVE-2017-0376 Information

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 Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.debian.org/security/2017/dsa-3877 https://github.com/torproject/tor/commit/56a7c5bc15e0447203a491c1ee37de9939ad1dcd https://lists.torproject.org/pipermail/tor-announce/2017-June/000131.html https://trac.torproject.org/projects/tor/ticket/22494

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5