PT-2023-4535 · Nullsoft · Nullsoft Scriptable Install System

Sredna · Published 2023-07-03 · Updated 2026-04-09 · CVE-2023-37378

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Nullsoft Scriptable Install System (NSIS) versions prior to 3.09

Description The issue is related to insufficient access control in the Nullsoft Scriptable Install System, which can be exploited by a remote attacker to elevate their privileges. This is due to the mishandling of access control for an uninstaller directory.

Recommendations For versions prior to 3.09, update to version 3.09 or later to resolve the issue. As a temporary workaround, consider restricting access to the uninstaller directory to minimize the risk of exploitation.

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

BDU:2023-04940

CVE-2023-37378

DLA-3483-1

DLA-3874-1

MGASA-2023-0236

Affected Products

Nullsoft Scriptable Install System

References · 30

• https://github.com/kichik/nsis/commit/281e2851fe669d10e0650fc89d0e7fb74a598967 · Patch
• https://github.com/kichik/nsis/commit/409b5841479c44fbf33a6ba97c1146e46f965467 · Patch
• https://github.com/kichik/nsis/commit/c40cf78994e74a1a3a381a850c996b251e3277c0 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-37378 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-37378 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3874-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OZPAAU57IA3NP6UOUXNBUQBAYK3JB2IM · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-37378 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-37378 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-37378 · Vendor Advisory
• https://debian.org/lts/security/2023/dla-3483 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2023-0236.html · Security Note
• https://lists.fedoraproject.org/archives/list/[e-mail]/message/A65FBUMHLZ7GBV3VDKUB5EK3A7X2UUWK · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2023-0236 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-37378 · Vendor Advisory