Debian DSA-2927-1 Critical: libXfont Privilege Escalation Advisory

CVE-2014-0209

Integer overflow of allocations in font metadata file parsing could
allow a local user who is already authenticated to the X server to
overwrite other memory in the heap.

CVE-2014-0210

libxfont does not validate length fields when parsing xfs protocol
replies allowing to write past the bounds of allocated memory when
storing the returned data from the font server.

CVE-2014-0211

Integer overflows calculating memory needs for xfs replies could
result in allocating too little memory and then writing the returned
data from the font server past the end of the allocated buffer.

For the oldstable distribution (squeeze), these problems have been fixed in
version 1:1.4.1-5.

For the stable distribution (wheezy), these problems have been fixed in
version 1:1.4.5-4.

For the unstable distribution (sid), these problems have been fixed in
version 1:1.4.7-2.

We recommend that you upgrade your libxfont packages.

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