CVE-2022-30333
RARLAB UnRAR Directory Traversal Vulnerability
RARLAB UnRAR
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.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 9 August 2022. US federal agencies were required to remediate it by 30 August 2022. CISA records this vulnerability as known to be used in ransomware campaigns.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 99.2%, which is higher than 99.9% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Frequently asked questions
Is CVE-2022-30333 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2022-30333.
What does CVE-2022-30333 affect?
CVE-2022-30333 affects RARLAB UnRAR. 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.
How severe is CVE-2022-30333?
CVE-2022-30333 is rated HIGH with a CVSS base score of 7.5. EPSS puts the probability of exploitation in the next 30 days at 99.2%, higher than 99.9% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 30 August 2022.
How should organisations respond to CVE-2022-30333?
Apply the vendor patch for RARLAB UnRAR as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.