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[ GLSA 200412-20 ] NASM: Buffer overflow vulnerability
From: Luke Macken <lewk () gentoo org>
Date: Mon, 20 Dec 2004 08:46:24 -0500
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200412-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: NASM: Buffer overflow vulnerability Date: December 20, 2004 Bugs: #74477 ID: 200412-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== NASM is vulnerable to a buffer overflow that allows an attacker to execute arbitrary code through the use of a malicious object file. Background ========== NASM is a 80x86 assembler that has been created for portability and modularity. NASM supports Pentium, P6, SSE MMX, and 3DNow extensions. It also supports a wide range of objects formats (ELF, a.out, COFF, ...), and has its own disassembler. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-lang/nasm <= 0.98.38 >= 0.98.38-r1 Description =========== Jonathan Rockway discovered that NASM-0.98.38 has an unprotected vsprintf() to an array in preproc.c. This code vulnerability may lead to a buffer overflow and potential execution of arbitrary code. Impact ====== A remote attacker could craft a malicious object file which, when supplied in NASM, would result in the execution of arbitrary code with the rights of the user running NASM. Workaround ========== There is no known workaround at this time. Resolution ========== All NASM users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=dev-lang/nasm-0.98.38-r1" References ========== [ 1 ] Original Advisory http://sourceforge.net/mailarchive/forum.php?thread_id=6166881&forum_id=4978 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200412-20.xml Concerns? ========= 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 security () gentoo org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.0
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- [ GLSA 200412-20 ] NASM: Buffer overflow vulnerability Luke Macken (Dec 20)