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GNU GZip CHMod File Permission Modification Race Condition Weakness
The gzip utility is reported prone to a security weakness; the issue occurs only when an archive is extracted into a world- or group-writeable directory. Reportedly, gzip employs non-atomic procedures to write a file and later change the permissions on the newly extracted file. A local attacker may leverage this issue to modify file permissions of target files. This weakness is reported to affect gzip 1.2.4, 1.3.3, and previous versions. |
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