CVE-2010-4528: Input Validation
First published: Thu Dec 23 2010(Updated: )
A NULL pointer dereference flaw was found in the Pidgin MSN DirectConnect protocol implementation, by processing certain P2P messages. A remote, authenticated user could use this flaw to cause denial of service (Pidgin crash). Acknowledgements: Red Hat would like to thank the Pidgin project for reporting this issue. Upstream acknowledges Stu Tomlinson as the original reporter.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Pidgin | =2.5.9 | |
| Pidgin | =2.5.8 | |
| Pidgin | =2.7.5 | |
| Pidgin | =2.7.0 | |
| Pidgin | =2.1.0 | |
| Pidgin | <=2.7.8 | |
| Pidgin | =2.7.4 | |
| Pidgin | =2.6.0 | |
| Pidgin | =2.5.2 | |
| Pidgin | =2.5.1 | |
| Pidgin | =2.7.6 | |
| Pidgin | =2.5.6 | |
| Pidgin | =2.5.7 | |
| Pidgin | =2.0.1 | |
| Pidgin | =2.4.2 | |
| Pidgin | =2.7.3 | |
| Pidgin | =2.5.4 | |
| Pidgin | =2.5.5 | |
| Pidgin | =2.6.5 | |
| Pidgin | =2.2.2 | |
| Pidgin | =2.1.1 | |
| Pidgin | =2.3.1 | |
| Libpurple | =2.7.6 | |
| Pidgin | =2.4.3 | |
| Pidgin | =2.6.6 | |
| Pidgin | =2.0.0 | |
| Pidgin | =2.0.2 | |
| Pidgin | =2.3.0 | |
| Pidgin | =2.4.1 | |
| Pidgin | =2.4.0 | |
| Pidgin | =2.6.2 | |
| Pidgin | =2.5.0 | |
| Pidgin | =2.2.0 | |
| Pidgin | =2.2.1 | |
| Pidgin | =2.7.7 | |
| Libpurple | =2.7.8 | |
| Libpurple | =2.7.7 | |
| Pidgin | =2.5.3 | |
| Pidgin | =2.6.1 | |
| Pidgin | =2.6.4 | |
| Pidgin | =2.7.2 | |
| Pidgin | =2.7.1 |
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Reference Links
- http://developer.pidgin.im/viewmtn/revision/diff/e76f4ad4ef2f10588195a0eedc7a08f82062f79c/with/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031/libpurple/protocols/msn/directconn.c
- http://developer.pidgin.im/viewmtn/revision/info/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031
- http://www.openwall.com/lists/oss-security/2010/12/31/5
- http://www.openwall.com/lists/oss-security/2010/12/27/1
- http://secunia.com/advisories/42732
- http://www.pidgin.im/news/security/?id=49
- https://bugzilla.redhat.com/show_bug.cgi?id=665421
- http://pidgin.im/pipermail/support/2010-December/009251.html
- http://www.securityfocus.com/bid/45581
- http://www.vupen.com/english/advisories/2011/0028
- http://secunia.com/advisories/42824
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052862.html
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00003.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052905.html
- http://www.vupen.com/english/advisories/2011/0054
- http://secunia.com/advisories/42877
- http://www.vupen.com/english/advisories/2011/0076
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:259
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18461
- https://www.cve.org/CVERecord?id=CVE-2010-4528 https://nvd.nist.gov/vuln/detail/CVE-2010-4528
- https://access.redhat.com/security/cve/CVE-2010-4528
- http://pidgin.im/news/security/?id=49
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=665856
Frequently Asked Questions
What is the severity of CVE-2010-4528?
CVE-2010-4528 has a medium severity rating due to the potential for denial of service via a crash of the Pidgin application.
How do I fix CVE-2010-4528?
To fix CVE-2010-4528, it is recommended to upgrade to Pidgin version 2.7.8 or later.
What software is affected by CVE-2010-4528?
CVE-2010-4528 affects Pidgin versions up to and including 2.7.7 and all versions of libpurple up to 2.7.8.
What happens if I exploit CVE-2010-4528?
Exploiting CVE-2010-4528 can cause the Pidgin application to crash, resulting in a denial of service for users.
Is remote authentication required to exploit CVE-2010-4528?
Yes, a remote, authenticated user is needed to exploit CVE-2010-4528 and trigger the vulnerability.
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- alias/CVE-2010-4528
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- version/pidgin/2.5.7
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- version/pidgin/2.4.2
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- version/pidgin/2.6.5
- version/pidgin/2.2.2
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- version/pidgin/2.5.3
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- version/pidgin/2.6.4
- version/pidgin/2.7.2
- version/pidgin/2.7.1