CVE-2011-2943: Null Pointer Dereference
First published: Mon Jul 18 2011(Updated: )
A NULL pointer dereference flaw was found in the way IRC protocol plug-in of the Pidgin multiprotocol instant messaging client processed certain nick names, when list set of users (/who command) was issued upon user session startup and connecting user has had certain encoding configuration setup. A remote attacker could use a specially-crafted string as their nickname to cause the Pidgin client on the side of the victim (connecting user) to crash. Upstream bug report: [1] <a href="http://developer.pidgin.im/ticket/14341">http://developer.pidgin.im/ticket/14341</a> Acknowledgements: Red Hat would like to thank the Pidgin project for reporting this issue.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Pidgin Pidgin | =2.5.9 | |
| Pidgin Pidgin | =2.5.8 | |
| Pidgin Pidgin | =2.7.9 | |
| Pidgin Pidgin | =2.7.5 | |
| Pidgin Pidgin | =2.7.0 | |
| Pidgin Pidgin | =2.1.0 | |
| Pidgin Pidgin | =2.7.4 | |
| Pidgin Pidgin | =2.6.0 | |
| Pidgin Pidgin | =2.5.2 | |
| Pidgin Pidgin | =2.5.1 | |
| Pidgin Pidgin | =2.7.6 | |
| Pidgin Pidgin | =2.7.11 | |
| Pidgin Pidgin | =2.5.6 | |
| Pidgin Pidgin | =2.7.10 | |
| Pidgin Pidgin | =2.5.7 | |
| Pidgin Pidgin | =2.0.1 | |
| Pidgin Pidgin | =2.4.2 | |
| Pidgin Libpurple | =2.9.0 | |
| Pidgin Pidgin | =2.7.3 | |
| Pidgin Pidgin | =2.5.4 | |
| Pidgin Pidgin | =2.5.5 | |
| Pidgin Pidgin | =2.6.5 | |
| Pidgin Pidgin | =2.2.2 | |
| Pidgin Pidgin | =2.1.1 | |
| Pidgin Pidgin | =2.3.1 | |
| Pidgin Pidgin | =2.4.3 | |
| Pidgin Pidgin | =2.6.6 | |
| Pidgin Pidgin | =2.8.0 | |
| Pidgin Pidgin | =2.0.0 | |
| Pidgin Pidgin | =2.0.2 | |
| Pidgin Pidgin | =2.3.0 | |
| Pidgin Pidgin | =2.4.1 | |
| Pidgin Libpurple | =2.8.0 | |
| Pidgin Pidgin | =2.4.0 | |
| Pidgin Pidgin | =2.6.2 | |
| Pidgin Pidgin | =2.5.0 | |
| Pidgin Pidgin | =2.2.0 | |
| Pidgin Pidgin | =2.2.1 | |
| Pidgin Pidgin | =2.7.8 | |
| Pidgin Pidgin | <=2.9.0 | |
| Pidgin Pidgin | =2.7.7 | |
| Pidgin Pidgin | =2.5.3 | |
| Pidgin Pidgin | =2.6.1 | |
| Pidgin Pidgin | =2.6.4 | |
| Pidgin Pidgin | =2.7.2 | |
| Pidgin Pidgin | =2.7.1 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2011/08/22/2
- https://bugzilla.redhat.com/show_bug.cgi?id=722939
- http://developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43
- http://developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c
- http://www.securityfocus.com/bid/49268
- http://secunia.com/advisories/45663
- http://securitytracker.com/id?1025961
- http://www.openwall.com/lists/oss-security/2011/08/20/2
- http://pidgin.im/news/security/?id=53
- http://secunia.com/advisories/45916
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69340
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005
- http://developer.pidgin.im/ticket/14341
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=732410
- http://www.pidgin.im/news/security/?id=53
- collector/nvd-historical
- collector/nvd-index
- agent/severity
- agent/weakness
- agent/references
- agent/author
- agent/description
- agent/type
- agent/event
- agent/softwarecombine
- agent/first-publish-date
- agent/last-modified-date
- agent/remedy
- agent/tags
- collector/mitre-cve
- source/MITRE
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2011-2943
- vendor/pidgin
- canonical/pidgin pidgin
- version/pidgin pidgin/2.5.9
- version/pidgin pidgin/2.5.8
- version/pidgin pidgin/2.7.9
- version/pidgin pidgin/2.7.5
- version/pidgin pidgin/2.7.0
- version/pidgin pidgin/2.1.0
- version/pidgin pidgin/2.7.4
- version/pidgin pidgin/2.6.0
- version/pidgin pidgin/2.5.2
- version/pidgin pidgin/2.5.1
- version/pidgin pidgin/2.7.6
- version/pidgin pidgin/2.7.11
- version/pidgin pidgin/2.5.6
- version/pidgin pidgin/2.7.10
- version/pidgin pidgin/2.5.7
- version/pidgin pidgin/2.0.1
- version/pidgin pidgin/2.4.2
- canonical/pidgin libpurple
- version/pidgin libpurple/2.9.0
- version/pidgin pidgin/2.7.3
- version/pidgin pidgin/2.5.4
- version/pidgin pidgin/2.5.5
- version/pidgin pidgin/2.6.5
- version/pidgin pidgin/2.2.2
- version/pidgin pidgin/2.1.1
- version/pidgin pidgin/2.3.1
- version/pidgin pidgin/2.4.3
- version/pidgin pidgin/2.6.6
- version/pidgin pidgin/2.8.0
- version/pidgin pidgin/2.0.0
- version/pidgin pidgin/2.0.2
- version/pidgin pidgin/2.3.0
- version/pidgin pidgin/2.4.1
- version/pidgin libpurple/2.8.0
- version/pidgin pidgin/2.4.0
- version/pidgin pidgin/2.6.2
- version/pidgin pidgin/2.5.0
- version/pidgin pidgin/2.2.0
- version/pidgin pidgin/2.2.1
- version/pidgin pidgin/2.7.8
- version/pidgin pidgin/2.9.0
- version/pidgin pidgin/2.7.7
- version/pidgin pidgin/2.5.3
- version/pidgin pidgin/2.6.1
- version/pidgin pidgin/2.6.4
- version/pidgin pidgin/2.7.2
- version/pidgin pidgin/2.7.1