PT-2018-15071 · Netwide+1 · Netwide Assembler+1

Published 2018-11-30 · Updated 2018-12-21 · CVE-2018-19755

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Netwide Assembler (NASM) version 2.14rc16

Description The issue is related to an illegal address access in the is mmacro function at asm/preproc.c, which can cause a denial of service due to an out-of-bounds array access. This occurs because a certain conversion can result in a negative integer.

Recommendations For Netwide Assembler (NASM) version 2.14rc16, consider restricting access to the is mmacro function in asm/preproc.c to minimize the risk of exploitation until a patch is available.

Exploit

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2018-19755

Affected Products

Astra Linux

Netwide Assembler

References · 9

• 🔥 https://repo.or.cz/nasm.git/commit/3079f7966dbed4497e36d5067cbfd896a90358cb · Exploit
• 🔥 https://bugzilla.nasm.us/show_bug.cgi?id=3392528 · Exploit
• https://osv.dev/vulnerability/CVE-2018-19755 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-19755 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-19755 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2018-19755 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-19755 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-19755 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-19755 · Vendor Advisory