A TOCTOU (Time-of-Check Time-of-Use) vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows a local attacker with write a
A TOCTOU (Time-of-Check Time-of-Use) vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows a local attacker with write access to a directory being backed up to influence the restore process if the attacker has access to the system where the restore is being performed. During restoration, files or directories may be created, renamed or overwritten outside the intended extraction
What happened
A TOCTOU (Time-of-Check Time-of-Use) vulnerability in GNU tar's incremental dumpdir 'X' rename handling allows a local attacker with write access to a directory being backed up to influence the restore process if the attacker has access to the system where the restore is being performed. During restoration, files or directories may be created, renamed or overwritten outside the intended extraction directory. This could lead to unauthorized file modification or, in some cases, privilege escalation. Exploitation does not require the attacker to modify or craft the archive, and standard backup and restore workflows—including extracting into a newly created directory without using the -P option do not mitigate the issue.
Does it affect you
Not enough information
No products recorded, so this cannot be matched against anything.
What to do
- Follow the vendor advisory for the fixed release and any interim mitigation.
access.redhat.com - Follow the vendor advisory for the fixed release and any interim mitigation.
access.redhat.com - Follow the vendor advisory for the fixed release and any interim mitigation.
bugzilla.redhat.com
Vendor's affected list
- rhel
- Exactly 8.0
Sources
A verdict here is derived from what you told us and what the vendor published. It is not an assessment of your environment. Why we never say you are safe.