Bug 1154909 – CVE-2014-3695 pidgin: crash in Mxit protocol plug-in

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Bug 1154909 - (CVE-2014-3695) CVE-2014-3695 pidgin: crash in Mxit protocol plug-in

Summary:	CVE-2014-3695 pidgin: crash in Mxit protocol plug-in

Status:	NEW

Aliases:	CVE-2014-3695

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=20141022,repor...
Keywords:	Reopened, Security

Depends On:	1155838 1340770 1403136 1446519
Blocks:	1154913 1415638
	Show dependency tree / graph

Reported:	2014-10-20 23:19 EDT by Murray McAllister
Modified:	2018-09-27 07:30 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:	pidgin 2.10.10
Doc Type:	Bug Fix
Doc Text:	A denial of service flaw was found in the way Pidgin's Mxit plug-in handled emoticons. A malicious remote server or a man-in-the-middle attacker could potentially use this flaw to crash Pidgin by sending a specially crafted emoticon.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2014-12-16 14:30:19 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
patch from upstream (5.79 KB, patch) 2014-10-20 23:20 EDT, Murray McAllister	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2017:1854	normal	SHIPPED_LIVE	Moderate: pidgin security, bug fix, and enhancement update	2017-08-01 14:23:14 EDT

Groups: None (edit)

Description Murray McAllister 2014-10-20 23:19:33 EDT

A flaw was found in the MXit protocol plug-in. A malicious server or man-in-the-middle attacker could trigger this issue and cause Pidgin to crash by sending a specially-crafted emoticon.

Acknowledgements:

Name: the Pidgin project
Upstream: Yves Younan (Cisco Talos), Richard Johnson (Cisco Talos)

Comment 1 Murray McAllister 2014-10-20 23:20:39 EDT

Created attachment 948787 [details]
patch from upstream

Comment 3 Murray McAllister 2014-10-22 21:21:02 EDT

Public now:

http://www.pidgin.im/news/security/?id=87

Comment 4 Murray McAllister 2014-10-22 21:26:56 EDT

Created pidgin tracking bugs for this issue:

Affects: fedora-all [bug 1155838]

Comment 5 Fedora Update System 2014-11-10 01:31:37 EST

pidgin-2.10.10-2.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2014-11-10 01:47:37 EST

pidgin-2.10.10-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 8 Siddharth Sharma 2014-12-02 00:35:03 EST

Analysis
========

1. In fuction,  asn_getUtf8( const gchar* data, gsize data_len, gchar type, char** utf8 ) which is part of mxit protocol.
 {
 	unsigned int len;
 	gchar *out_str;
 	...
2. malloc and and memcpy is done without checking the length being passed, which is the length of the emoticon being sent or used which can cause crash by sending specially crafted emoticon.
 	out_str = g_malloc(len + 1);
 	memcpy(out_str, &data[2], len); /* data field */

Comment 14 errata-xmlrpc 2017-08-01 16:20:49 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:1854 https://access.redhat.com/errata/RHSA-2017:1854

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