KLA10932 Multiple vulnerabilities in Pidgin

Multiple serious vulnerabilities have been found in Pidgin. Malicious users can exploit these vulnerabilities to overwrite arbitrary files, cause denial of service, obtain sensitive information.

Below is a complete list of vulnerabilities:

1. A directory traversal vulnerability in the handling of MXIT protocol can be exploited remotely via specially designed MXIT data sent from the server to overwrite arbitrary files;
2. An out-of-bounds read vulnerability can be exploited remotely via specialy designed MXIT data (a particular string) possibly to obtain sensitive information;
3. A buffer overflow vulnerability in the handling of MXIT protocol can be exploited remotely via specially designed data possibly to cause a denial of service.

Technical details

Vulnerability (1) occurs if liburple is triggered by man-in-the-middle or a malicious server to overwrite local files. The name and and content of these files can be specified by the remote attacker.

To trigger vulnerability (3) a malicious server or man-in-the-middle can send negative length values.

Original advisories

Pidgin Security Advisory

Related products

Pidgin

CVE list

CVE-2016-2380 warning

CVE-2016-2378 high

CVE-2016-4323 high

Solution

Update to the latest version

Download Pidgin

Impacts

• OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

• OAF

Overwrite arbitrary files. Exploitation of vulnerabilities with this impact can lead to loss of some information, contained in overwritten files.

Affected Products

• Pidgin versions earlier than 2.11.0