CVE-2022-30333: RARLAB UnRAR Directory Traversal Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: yes — in CISA KEV since 2022-08-09
EPSS: 99.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-05-09 · updated 2026-10-02
Weakness: CWE-22

Description

RARLAB UnRAR before 6.12 on Linux and UNIX allows directory traversal to write to files during an extract (aka unpack) operation, as demonstrated by creating a ~/.ssh/authorized_keys file. NOTE: WinRAR and Android RAR are unaffected.

Affected products

Debian Linux: 10.0
RARLAB UnRAR: before 6.12 — fixed in 6.12

How to fix

Upgrade to a fixed version: RARLAB UnRAR 6.12. Check the vendor advisory for mitigations.

References

http://packetstormsecurity.com/files/167989/Zimbra-UnRAR-Path-Traversal.html
https://blog.sonarsource.com/zimbra-pre-auth-rce-via-unrar-0day/
https://lists.debian.org/debian-lts-announce/2023/08/msg00022.html
https://security.gentoo.org/glsa/202309-04
https://www.rarlab.com/rar/rarlinux-x32-612.tar.gz
https://www.rarlab.com/rar_add.htm
http://packetstormsecurity.com/files/167989/Zimbra-UnRAR-Path-Traversal.html
https://blog.sonarsource.com/zimbra-pre-auth-rce-via-unrar-0day/
https://lists.debian.org/debian-lts-announce/2023/08/msg00022.html
https://security.gentoo.org/glsa/202309-04
https://www.rarlab.com/rar/rarlinux-x32-612.tar.gz
https://www.rarlab.com/rar_add.htm

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