An information leak exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could potentially result in an out-of-bounds read. A malicious user, server, or man-in-the-middle can send an invalid size for an avatar which will trigger an out-of-bounds read vulnerability. This could result in a denial of service or copy data from memory to the file, resulting in an information leak if the avatar is sent to another user.
The product reads data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/91335 | third party advisory vdb entry |
| http://www.pidgin.im/news/security/?id=100 | patch vendor advisory |
| http://www.debian.org/security/2016/dsa-3620 | third party advisory vendor advisory |
| https://security.gentoo.org/glsa/201701-38 | vendor advisory |
| http://www.ubuntu.com/usn/USN-3031-1 | third party advisory vendor advisory |
| http://www.talosintelligence.com/reports/TALOS-2016-0135/ | third party advisory technical description |