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Ubuntu Security Notice USN-1746-1

Ubuntu Security Notice USN-1746-1
Posted Feb 25, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1746-1 - Chris Wysopal discovered that Pidgin incorrectly handled file transfers in the MXit protocol handler. A remote attacker could use this issue to create or overwrite arbitrary files. This issue only affected Ubuntu 11.10, Ubuntu 12.04 LTS and Ubuntu 12.10. It was discovered that Pidgin incorrectly handled long HTTP headers in the MXit protocol handler. A malicious remote server could use this issue to execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, web, arbitrary, protocol
systems | linux, ubuntu
advisories | CVE-2013-0271, CVE-2013-0272, CVE-2013-0273, CVE-2013-0274, CVE-2013-0271, CVE-2013-0272, CVE-2013-0273, CVE-2013-0274
SHA-256 | cab8da5f6e98651feb98f652311a38e0a1209f3942cdce9adda737ce25ba333d

Ubuntu Security Notice USN-1746-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1746-1
February 25, 2013

pidgin vulnerabilities
============================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in Pidgin.

Software Description:
- pidgin: graphical multi-protocol instant messaging client for X

Details:

Chris Wysopal discovered that Pidgin incorrectly handled file transfers in
the MXit protocol handler. A remote attacker could use this issue to create
or overwrite arbitrary files. This issue only affected Ubuntu 11.10,
Ubuntu 12.04 LTS and Ubuntu 12.10. (CVE-2013-0271)

It was discovered that Pidgin incorrectly handled long HTTP headers in the
MXit protocol handler. A malicious remote server could use this issue to
execute arbitrary code. (CVE-2013-0272)

It was discovered that Pidgin incorrectly handled long user IDs in the
Sametime protocol handler. A malicious remote server could use this issue
to cause Pidgin to crash, resulting in a denial of service. (CVE-2013-0273)

It was discovered that Pidgin incorrectly handled long strings when
processing UPnP responses. A remote attacker could use this issue to cause
Pidgin to crash, resulting in a denial of service. (CVE-2013-0274)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.10:
libpurple0 1:2.10.6-0ubuntu2.2
pidgin 1:2.10.6-0ubuntu2.2

Ubuntu 12.04 LTS:
libpurple0 1:2.10.3-0ubuntu1.3
pidgin 1:2.10.3-0ubuntu1.3

Ubuntu 11.10:
libpurple0 1:2.10.0-0ubuntu2.2
pidgin 1:2.10.0-0ubuntu2.2

Ubuntu 10.04 LTS:
libpurple0 1:2.6.6-1ubuntu4.6
pidgin 1:2.6.6-1ubuntu4.6

After a standard system update you need to restart Pidgin to make all the
necessary changes.

References:
http://www.ubuntu.com/usn/usn-1746-1
CVE-2013-0271, CVE-2013-0272, CVE-2013-0273, CVE-2013-0274

Package Information:
https://launchpad.net/ubuntu/+source/pidgin/1:2.10.6-0ubuntu2.2
https://launchpad.net/ubuntu/+source/pidgin/1:2.10.3-0ubuntu1.3
https://launchpad.net/ubuntu/+source/pidgin/1:2.10.0-0ubuntu2.2
https://launchpad.net/ubuntu/+source/pidgin/1:2.6.6-1ubuntu4.6
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