SB2018091314 - Multiple vulnerabilities in Netwide Assembler

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Main Vulnerability Database SB2018091314

SB2018091314 - Multiple vulnerabilities in Netwide Assembler

Published: September 13, 2018 Updated: August 8, 2020

Security Bulletin ID SB2018091314
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2018-19755)

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

There is an illegal address access at asm/preproc.c (function: is_mmacro) in Netwide Assembler (NASM) 2.14rc16 that will cause a denial of service (out-of-bounds array access) because a certain conversion can result in a negative integer.


2) Input validation error (CVE-ID: CVE-2018-19213)

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Netwide Assembler (NASM) through 2.14rc16 has memory leaks that may lead to DoS, related to nasm_malloc in nasmlib/malloc.c.


3) Out-of-bounds write (CVE-ID: CVE-2018-16999)

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

Netwide Assembler (NASM) 2.14rc15 has an invalid memory write (segmentation fault) in expand_smacro in preproc.c, which allows attackers to cause a denial of service via a crafted input file.


Remediation

Install update from vendor's website.

References