#VU42065 Input validation error in Pidgin - CVE-2013-6478

Vulnerability identifier: #VU42065

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-6478

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Pidgin
Client/Desktop applications / Messaging software

Vendor: pidgin.im

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

gtkimhtml.c in Pidgin before 2.10.8 does not properly interact with underlying library support for wide Pango layouts, which allows user-assisted remote attackers to cause a denial of service (application crash) via a long URL that is examined with a tooltip.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Pidgin: 2.0.0 - 2.10.6

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External links
https://hg.pidgin.im/pidgin/main/rev/2bb66ef1475e
https://lists.opensuse.org/opensuse-updates/2014-02/msg00039.html
https://lists.opensuse.org/opensuse-updates/2014-03/msg00005.html
https://pidgin.im/news/security/?id=72
https://pidgin.im/pipermail/support/2013-March/012980.html
https://pidgin.im/pipermail/support/2013-March/012981.html
https://www.debian.org/security/2014/dsa-2859
https://www.ubuntu.com/usn/USN-2100-1
https://rhn.redhat.com/errata/RHSA-2014-0139.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.