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
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2014-3695
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:
Depends On: 1155838 1340770 1403136 1446519
Blocks: 1154913 1415638
TreeView+ depends on / blocked
 
Reported: 2014-10-21 03:19 UTC by Murray McAllister
Modified: 2021-02-17 06:04 UTC (History)
6 users (show)

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.
Clone Of:
Environment:
Last Closed: 2019-06-08 02:35:18 UTC
Embargoed:

Attachments (Terms of Use)
patch from upstream (5.79 KB, patch)
2014-10-21 03:20 UTC, Murray McAllister 		no flags Details | Diff
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:1854 0 normal SHIPPED_LIVE Moderate: pidgin security, bug fix, and enhancement update 2017-08-01 18:23:14 UTC

Description Murray McAllister 2014-10-21 03:19:33 UTC 
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 2014-10-21 03:20:39 UTC 
Created attachment 948787 [details]
patch from upstream
Comment 3 Murray McAllister 2014-10-23 01:21:02 UTC 
Public now:

http://www.pidgin.im/news/security/?id=87
Comment 4 Murray McAllister 2014-10-23 01:26:56 UTC 
Created pidgin tracking bugs for this issue:

Affects: fedora-all [bug 1155838]
Comment 5 Fedora Update System 2014-11-10 06:31:37 UTC 
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 06:47:37 UTC 
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 05:35:03 UTC 
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 20:20:49 UTC 
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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