Bug 1348444 – CVE-2016-4302 libarchive: Heap buffer overflow in the Rar decompression functionality

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Bug 1348444 - (CVE-2016-4302) CVE-2016-4302 libarchive: Heap buffer overflow in the Rar decompression functionality

Summary:	CVE-2016-4302 libarchive: Heap buffer overflow in the Rar decompression funct...

Status:	CLOSED ERRATA

Aliases:	CVE-2016-4302

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20160619,repor...
Keywords:	Security

Depends On:	1352776 1353065 1353066
Blocks:	1334215
	Show dependency tree / graph

Reported:	2016-06-21 03:59 EDT by Andrej Nemec
Modified:	2016-10-18 00:59 EDT (History)
CC List:	5 users (show)

See Also:
Fixed In Version:	libarchive 3.2.1
Doc Type:	If docs needed, set a value
Doc Text:	A vulnerability was found in libarchive's handling of RAR archives. A specially crafted RAR file can cause a heap overflow, potentially leading to code execution in the context of the application.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-10-18 00:59:10 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:1844	normal	SHIPPED_LIVE	Important: libarchive security update	2016-09-12 20:11:35 EDT

Groups: None (edit)

Description Andrej Nemec 2016-06-21 03:59:14 EDT

An exploitable heap overflow vulnerability exists in the Rar decompression functionality of libarchive. A specially crafted Rar file can cause a heap corruption eventually leading to code execution. An attacker can send a malformed file to trigger this vulnerability.

External references:

http://www.talosintel.com/reports/TALOS-2016-0154/

Upstream fix:

https://github.com/libarchive/libarchive/commit/05caadc7eedbef471ac9610809ba683f0c698700

Comment 1 Doran Moppert 2016-06-22 03:15:59 EDT

Libarchive-2.8 does not include the rar/ppmd functionality that introduced this
flaw.

Comment 2 Doran Moppert 2016-07-05 00:37:55 EDT

Created libarchive tracking bugs for this issue:

Affects: fedora-all [bug 1352776]

Comment 5 errata-xmlrpc 2016-09-12 16:14:24 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2016:1844 https://rhn.redhat.com/errata/RHSA-2016-1844.html

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