CVE-2018-20535 — Use After Free in Nasm

CWE-416 — Use After Free7 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 67.47%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
NasmDebian NasmNasm Netwide Assembler
Timeline
PublishedDec 28
Latest updateMay 14

Description

There is a use-after-free at asm/preproc.c (function pp_getline) in Netwide Assembler (NASM) 2.14rc16 that will cause a denial of service during a line-number increment attempt.

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/nasm< nasm 2.15.04-1 (bookworm)
▶Debiannasm/nasm< 2.15.04-1+3

🔴Vulnerability Details

2
GHSA
GHSA-rvm6-q4p6-g665: There is a use-after-free at asm/preproc↗2022-05-14
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OSV
CVE-2018-20535: There is a use-after-free at asm/preproc↗2018-12-28
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📋Vendor Advisories

2
Red Hat
nasm: Use-after-free at asm/preproc.c resulting in a denial of service↗2018-11-18
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Debian
CVE-2018-20535: nasm - There is a use-after-free at asm/preproc.c (function pp_getline) in Netwide Asse...↗2018
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💬Community

2
Bugzilla
CVE-2018-20535 nasm: Use-after-free at asm/preproc.c resulting in a denial of service↗2019-01-07
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Bugzilla
CVE-2018-1000886 CVE-2018-20535 CVE-2018-20538 nasm: various flaws [fedora-all]↗2019-01-07
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