oss-sec mailing list archives
Re: CVE Request -- FontForge: Stack-based buffer overflow by processing specially-crafted CHARSET_REGISTRY font file header
From: Josh Bressers <bressers () redhat com>
Date: Thu, 2 Dec 2010 15:55:09 -0500 (EST)
Please use CVE-2010-4259 for this. Thanks. -- JB ----- "Jan Lieskovsky" <jlieskov () redhat com> wrote:
Hello Steve, vendors, Ulrik Persson reported a stack-based buffer overflow flaw in the way FontForge font editor processed certain Bitmap Distribution Format (BDF) font files, with specially-crafted value of the CHARSET_REGISTRY header. A remote attacker could create a specially-crafted BDF font file and trick a local, unsuspecting user into opening it in FontForge, which could lead to fontforge executable crash or, potentially, arbitrary code execution with the privileges of the user running the executable. References: [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=605537 [2] https://bugzilla.redhat.com/show_bug.cgi?id=659359 Public PoC: [3] http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=fontforge-overflow.txt;att=1;bug=605537 Flaw severity note: On systems with compile time buffer checks (FORTIFY_SOURCE) feature enabled, the impact of this flaw is mitigated to be only crash. Could you allocate a CVE id for this issue? Thanks && Regards, Jan. -- Jan iankko Lieskovsky / Red Hat Security Response Team
Current thread:
- CVE Request -- FontForge: Stack-based buffer overflow by processing specially-crafted CHARSET_REGISTRY font file header Jan Lieskovsky (Dec 02)
- Re: CVE Request -- FontForge: Stack-based buffer overflow by processing specially-crafted CHARSET_REGISTRY font file header Josh Bressers (Dec 02)