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Secunia Security Advisory 30594

Secunia Security Advisory 30594
Posted Jun 11, 2008
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in NASM, which potentially can be exploited by malicious people to compromise a user's system.

tags | advisory
SHA-256 | b310d3d19728f2dbdd9029d56a0892dc80cd5992c51301a8c6ce8a391566f359

Secunia Security Advisory 30594

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TITLE:
NASM "ppscan()" Off-By-One Vulnerability

SECUNIA ADVISORY ID:
SA30594

VERIFY ADVISORY:
http://secunia.com/advisories/30594/

CRITICAL:
Less critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
NASM (Netwide Assembler) 2.x
http://secunia.com/product/19031/
NASM (Netwide Assembler) 0.x
http://secunia.com/product/4398/

DESCRIPTION:
A vulnerability has been reported in NASM, which potentially can be
exploited by malicious people to compromise a user's system.

The vulnerability is caused due to an off-by-one error within the
"ppscan()" function in preproc.c. This can be exploited to cause a
stack-based buffer overflow with a zero byte by tricking the user
into assembling a specially crafted ASM file.

Successful exploitation may allow execution of arbitrary code.

SOLUTION:
Update to version 2.03.

PROVIDED AND/OR DISCOVERED BY:
Reported by Philipp Thomas in a NASM bug report.

ORIGINAL ADVISORY:
https://sourceforge.net/tracker/?func=detail&atid=106208&aid=1942146&group_id=6208

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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