PT-2020-5676 · Netwide Assembler+1 · Nasm+1

Published 2020-08-03 · Updated 2022-09-02 · CVE-2020-24978

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions NASM version 2.15.04rc3

Description The issue is related to a double-free vulnerability in the pp tokline function of the asm/preproc.c file in the NASM assembler for x86 architecture. This vulnerability can be exploited by a remote attacker to gain access to confidential data, compromise data integrity, and cause a denial of service.

Recommendations For NASM version 2.15.04rc3, update to a version that includes the fix from commit 8806c3ca007b84accac21dd88b900fb03614ceb7 to resolve the issue.

Exploit

Fix

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

BDU:2021-01473

CVE-2020-24978

Affected Products

Astra Linux

Nasm

References · 10

• 🔥 https://bugzilla.nasm.us/show_bug.cgi?id=3392712 · Exploit
• https://osv.dev/vulnerability/CVE-2020-24978 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-24978 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-24978 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-24978 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2020-24978 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-24978 · Security Note
• https://bdu.fstec.ru/vul/2021-01473 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-24978 · Vendor Advisory
• https://xn--80ahaefyxhn.xn--j1afgaq.xn--p1ai/bin/view/%D0%9E%D0%A1%D0%BD%D0%BE%D0%B2%D0%B0/%D0%9E%D0%B1%D0%BD%D0%BE%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F/2.1 · Note