Pidgin reports :

A series of specially crafted file transfer requests can cause clients to reference invalid memory. The user must have accepted one of the file transfer requests.

Various remote triggerable crashes in pidgin have been fixed :

  - In some situations the MSN server sends text that isn't     UTF-8 encoded, and Pidgin fails to verify the text's     encoding. In some cases this can lead to a crash when     attempting to display the text (). (CVE-2012-1178)

  - Incoming messages with certain characters or character     encodings can cause clients to crash. (CVE-2012-1178 /     CVE-2012-2318)

  - A series of specially crafted file transfer requests can     cause clients to reference invalid memory. The user must     have accepted one of the file transfer requests.
    (CVE-2012-2214)

Fix for CVE-2012-2214 and CVE-2012-2318.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Multiple vulnerabilities has been discovered and corrected in pidgin :

A series of specially crafted file transfer requests can cause clients to reference invalid memory. The user must have accepted one of the file transfer requests (CVE-2012-2214).

Incoming messages with certain characters or character encodings can cause clients to crash (CVE-2012-2318).

This update provides pidgin 2.10.4, which is not vulnerable to these issues.

The version of Pidgin installed on the remote host is earlier than 2.10.4 and is, therefore, potentially affected by the following issues :

  - An error exists in the file 'libpurple/proxy.c' that     can allow certain file transfer requests to an invalid     pointer to be dereferenced, leading to application     crashes. (CVE-2012-2214)

  - An error exists in the function     'msn_message_parse_payload' in the file     'libpurple/protocols/msn/msg.c' that can allow certain     characters or character encodings to crash the     application. (CVE-2012-2318)

The remote Solaris system is missing necessary patches to address security updates :

  - proxy.c in libpurple in Pidgin before 2.10.4 does not     properly handle canceled SOCKS5 connection attempts,     which allows user-assisted remote authenticated users to     cause a denial of service (application crash) via a     sequence of XMPP file-transfer requests. (CVE-2012-2214)

  - msg.c in the MSN protocol plugin in libpurple in Pidgin     before 2.10.4 does not properly handle crafted     characters, which allows remote servers to cause a     denial of service (application crash) by placing these     characters in a text/ plain message. (CVE-2012-2318)

Evgeny Boger discovered that Pidgin incorrectly handled buddy list messages in the AIM and ICQ protocol handlers. A remote attacker could send a specially crafted message and cause Pidgin to crash, leading to a denial of service. This issue only affected Ubuntu 10.04 LTS, 11.04 and 11.10. (CVE-2011-4601)

Thijs Alkemade discovered that Pidgin incorrectly handled malformed voice and video chat requests in the XMPP protocol handler. A remote attacker could send a specially crafted message and cause Pidgin to crash, leading to a denial of service. This issue only affected Ubuntu 10.04 LTS, 11.04 and 11.10. (CVE-2011-4602)

Diego Bauche Madero discovered that Pidgin incorrectly handled UTF-8 sequences in the SILC protocol handler. A remote attacker could send a specially crafted message and cause Pidgin to crash, leading to a denial of service. This issue only affected Ubuntu 10.04 LTS, 11.04 and 11.10. (CVE-2011-4603)

Julia Lawall discovered that Pidgin incorrectly cleared memory contents used in cryptographic operations. An attacker could exploit this to read the memory contents, leading to an information disclosure. This issue only affected Ubuntu 10.04 LTS. (CVE-2011-4922)

Clemens Huebner and Kevin Stange discovered that Pidgin incorrectly handled nickname changes inside chat rooms in the XMPP protocol handler. A remote attacker could exploit this by changing nicknames, leading to a denial of service. This issue only affected Ubuntu 11.10.
(CVE-2011-4939)

Thijs Alkemade discovered that Pidgin incorrectly handled off-line instant messages in the MSN protocol handler. A remote attacker could send a specially crafted message and cause Pidgin to crash, leading to a denial of service. This issue only affected Ubuntu 10.04 LTS, 11.04 and 11.10. (CVE-2012-1178)

Jose Valentin Gutierrez discovered that Pidgin incorrectly handled SOCKS5 proxy connections during file transfer requests in the XMPP protocol handler. A remote attacker could send a specially crafted request and cause Pidgin to crash, leading to a denial of service.
This issue only affected Ubuntu 12.04 LTS and 11.10. (CVE-2012-2214)

Fabian Yamaguchi discovered that Pidgin incorrectly handled malformed messages in the MSN protocol handler. A remote attacker could send a specially crafted message and cause Pidgin to crash, leading to a denial of service. (CVE-2012-2318)

Ulf Harnhammar discovered that Pidgin incorrectly handled messages with in-line images in the MXit protocol handler. A remote attacker could send a specially crafted message and possibly execute arbitrary code with user privileges. (CVE-2012-3374).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
59085	FreeBSD : libpurple -- Invalid memory dereference in the XMPP protocol plug-in by processing a series of specially crafted file transfer requests (64f8b72d-9c4e-11e1-9c94-000bcdf0a03b)	Nessus	FreeBSD Local Security Checks	5/14/2012	1/6/2021	low
59682	SuSE 10 Security Update : finch, libpurple, and pidgin (ZYPP Patch Number 8131)	Nessus	SuSE Local Security Checks	6/25/2012	1/19/2021	medium
59435	Fedora 16 : pidgin-2.10.4-1.fc16 (2012-8686)	Nessus	Fedora Local Security Checks	6/11/2012	1/11/2021	medium
61954	Mandriva Linux Security Advisory : pidgin (MDVSA-2012:082)	Nessus	Mandriva Local Security Checks	9/6/2012	1/6/2021	medium
59317	Pidgin < 2.10.4 Multiple DoS Vulnerabilities	Nessus	Windows	5/31/2012	7/24/2018	medium
59353	Fedora 17 : pidgin-2.10.4-1.fc17 (2012-8687)	Nessus	Fedora Local Security Checks	6/4/2012	1/11/2021	medium
59433	Fedora 15 : pidgin-2.10.4-1.fc15 (2012-8669)	Nessus	Fedora Local Security Checks	6/11/2012	1/11/2021	medium
64128	SuSE 11.1 Security Update : finch, libpurple and pidgin (SAT Patch Number 6294)	Nessus	SuSE Local Security Checks	1/25/2013	1/19/2021	medium
64129	SuSE 11.1 Security Update : finch, libpurple and pidgin (SAT Patch Number 6294)	Nessus	SuSE Local Security Checks	1/25/2013	1/19/2021	medium
80738	Oracle Solaris Third-Party Patch Update : pidgin (multiple_vulnerabilities_in_pidgin)	Nessus	Solaris Local Security Checks	1/19/2015	1/14/2021	medium
59903	Ubuntu 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : pidgin vulnerabilities (USN-1500-1)	Nessus	Ubuntu Local Security Checks	7/10/2012	9/19/2019	high

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