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CVE-2021-23521

Published: 31 January 2022

This affects the package juce-framework/JUCE before 6.1.5. This vulnerability is triggered when a malicious archive is crafted with an entry containing a symbolic link. When extracted, the symbolic link is followed outside of the target dir allowing writing arbitrary files on the target host. In some cases, this can allow an attacker to execute arbitrary code. The vulnerable code is in the ZipFile::uncompressEntry function in juce_ZipFile.cpp and is executed when the archive is extracted upon calling uncompressTo() on a ZipFile object.

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
juce
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

jammy Needed

trusty Ignored
(end of standard support)
upstream Needs triage

impish Ignored
(end of life)
xenial Needs triage

kinetic Ignored
(end of life, was needed)
mantic Needed

lunar Ignored
(end of life, was needed)

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H