Ariel Berkman discovered that xine-lib reads specific input data into an array without checking the input size in demux_aiff.c, making it vulnerable to a buffer overflow (CAN-2004-1300) . iDefense discovered that the PNA_TAG handling code in pnm_get_chunk() does not check if the input size is larger than the buffer size (CAN-2004-1187). iDefense also discovered that in this same function, a negative value could be given to an unsigned variable that specifies the read length of input data (CAN-2004-1188).
A remote attacker could craft a malicious movie or convince a targeted user to connect to a malicious PNM server, which could result in the execution of arbitrary code with the rights of the user running any xine-lib frontend.
There is no known workaround at this time.
All xine-lib users should upgrade to the latest version:
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to email@example.com or alternatively, you may file a bug at http://bugs.gentoo.org.
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