Mandrake Linux Security Advisory : freetype2 (MDKSA-2006:099-1)
High Nessus Plugin ID 21715
SynopsisThe remote Mandrake Linux host is missing one or more security updates.
DescriptionInteger underflow in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a font file with an odd number of blue values, which causes the underflow when decrementing by 2 in a context that assumes an even number of values. (CVE-2006-0747)
Multiple integer overflows in FreeType before 2.2 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via attack vectors related to (1) bdf/bdflib.c, (2) sfnt/ttcmap.c, (3) cff/cffgload.c, and (4) the read_lwfn function and a crafted LWFN file in base/ftmac.c. (CVE-2006-1861)
Ftutil.c in Freetype before 2.2 allows remote attackers to cause a denial of service (crash) via a crafted font file that triggers a null dereference. (CVE-2006-2661)
In addition, a patch is applied to 2.1.10 in Mandriva 2006 to fix a serious bug in ttkern.c that caused some programs to go into an infinite loop when dealing with fonts that don't have a properly sorted kerning sub-table. This patch is not applicable to the earlier Mandriva releases.
The previous update introduced some issues with other applications and libraries linked to libfreetype, that were missed in testing for the vulnerability issues. The new packages correct these issues.
SolutionUpdate the affected packages.