Bug 1406314 (CVE-2016-1254) - CVE-2016-1254 tor: Remote DoS via parsing problem
Summary: CVE-2016-1254 tor: Remote DoS via parsing problem
Status: CLOSED ERRATA
Alias: CVE-2016-1254
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20161219,repor...
Keywords: Security
Depends On: 1406316 1406317
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-12-20 09:12 UTC by Andrej Nemec
Modified: 2019-06-08 21:40 UTC (History)
4 users (show)

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Clone Of:
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Last Closed: 2017-03-03 14:31:22 UTC


Attachments (Terms of Use)

Description Andrej Nemec 2016-12-20 09:12:41 UTC
It was found that there is an issue with parsing that could ause clients to read a single byte past the end of an allocated region. This bug could be used to cause hardened clients (built with --enable-expensive-hardening) to crash if they tried to visit a hostile hidden service. Non-hardened clients are only affected depending on the details of their platform's memory allocator.

External References:

https://lists.torproject.org/pipermail/tor-announce/2016-December/000122.html

Upstream patch:

https://gitweb.torproject.org/tor.git/commit/?id=d978216dea6b21ac38230a59d172139185a68dbd

Comment 1 Andrej Nemec 2016-12-20 09:14:08 UTC
Created tor tracking bugs for this issue:

Affects: fedora-all [bug 1406316]
Affects: epel-all [bug 1406317]


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