blob: 18f71993077cf7d9cdf0da4905d138d571f7c508 [file] [log] [blame]
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200412-20">
<title>NASM: Buffer overflow vulnerability</title>
<synopsis>
NASM is vulnerable to a buffer overflow that allows an attacker to execute
arbitrary code through the use of a malicious object file.
</synopsis>
<product type="ebuild">NASM</product>
<announced>December 20, 2004</announced>
<revised>December 20, 2004: 01</revised>
<bug>74477</bug>
<access>remote</access>
<affected>
<package name="dev-lang/nasm" auto="yes" arch="*">
<unaffected range="ge">0.98.38-r1</unaffected>
<vulnerable range="le">0.98.38</vulnerable>
</package>
</affected>
<background>
<p>
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.
</p>
</background>
<description>
<p>
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.
</p>
</description>
<impact type="normal">
<p>
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.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All NASM users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=dev-lang/nasm-0.98.38-r1&quot;</code>
</resolution>
<references>
<uri link="http://sourceforge.net/mailarchive/forum.php?thread_id=6166881&amp;forum_id=4978">Original Advisory</uri>
</references>
<metadata tag="requester" timestamp="Thu, 16 Dec 2004 22:07:20 +0000">
koon
</metadata>
<metadata tag="bugReady" timestamp="Thu, 16 Dec 2004 22:07:54 +0000">
koon
</metadata>
<metadata tag="submitter" timestamp="Fri, 17 Dec 2004 11:34:13 +0000">
SeJo
</metadata>
</glsa>