Description
Netwide Assembler (NASM) 2.14rc16 has a heap-based buffer over-read in expand_mmac_params in asm/preproc.c for the special cases of the % and $ and ! characters.
References (4)
Core 4
Core References
Exploit, Issue Tracking x_refsource_misc
https://bugzilla.nasm.us/show_bug.cgi?id=3392525
Third Party Advisory x_refsource_misc
https://repo.or.cz/nasm.git/commit/4b5b737d4991578b1918303dc0fd9c9ab5c7ce4f
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.html
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.html
Scores
CVSS v3
7.8
EPSS
0.0021
EPSS Percentile
43.3%
Attack Vector
LOCAL
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
CWE
CWE-125
Status
published
Products (4)
nasm/netwide_assembler
12.14 rc16
redhat/enterprise_linux
5.0
redhat/enterprise_linux
6.0
redhat/enterprise_linux
7.0
Published
Nov 12, 2018
Tracked Since
Feb 18, 2026