# CVE-2021-23521: juce: This affects the package juce-framework/JUCE before 6.1.5

CVE-2021-23521 is fixed in juce on 1 platform, first by DEBIAN-CVE-2021-23521, released January 31, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-23521
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0054
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 31, 2022

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | juce Debian 12.15 (bookworm) | 6.1.5~ds0-1 | [DEBIAN-CVE-2021-23521](https://patchblox.com/security/data/fix/linux/debian-cve-2021-23521.md) | Jan 31, 2022 |
| Linux | juce Debian 13.5 (trixie) | 6.1.5~ds0-1 | [DEBIAN-CVE-2021-23521](https://patchblox.com/security/data/fix/linux/debian-cve-2021-23521.md) | Jan 31, 2022 |
| Linux | juce Debian 14 | 6.1.5~ds0-1 | [DEBIAN-CVE-2021-23521](https://patchblox.com/security/data/fix/linux/debian-cve-2021-23521.md) | Jan 31, 2022 |

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