X.Org libXfont vulnerabilities

6 known CVE vulnerabilities in X.Org libXfont, translated and rated.

CVE-2015-1804High
The bdfReadCharacters function in X.Org libXfont before version 1.4.9 and 1.5.x before 1.5.1 does not properly perform type conversion for metrics values. This allows remote authenticated users to cause a denial of service (out-of-bounds memory access) and possibly execute arbitrary code via a crafted BDF font file.
CVE-2015-1803High
The bdfReadCharacters function in X.Org libXfont before version 1.4.9 and 1.5.x before 1.5.1 does not properly handle character bitmaps it cannot read. This allows remote authenticated users to cause a denial of service (NULL pointer dereference and crash) and possibly execute arbitrary code via a crafted BDF font file.
CVE-2015-1802High
The bdfReadProperties function in X.Org libXfont before version 1.4.9 and 1.5.x before 1.5.1 allows remote authenticated users to cause a denial of service (out-of-bounds write and crash) or possibly execute arbitrary code via a negative or large property count in a BDF font file.
CVE-2014-0211High
Multiple integer overflows in the fs_get_reply, fs_alloc_glyphs, and fs_read_extent_info functions in X.Org libXfont before 1.4.8 and 1.4.9x before 1.4.99.901 allow remote font servers to execute arbitrary code via a crafted xfs reply, which triggers a buffer overflow.
CVE-2014-0210High
Multiple buffer overflows in X.Org libXfont before 1.4.8 and 1.4.9x before 1.4.99.901 allow remote font servers to execute arbitrary code via a crafted xfs protocol reply.
CVE-2007-5199Critical
A single byte overflow in catalogue.c in X.Org libXfont 1.3.1 allows remote attackers to have unspecified impact.