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Werk #10462: WATO backups: Fix file path traversal vulnerability

ComponentWATO
TitleWATO backups: Fix file path traversal vulnerability
Date2019-11-22 15:00:39
Checkmk EditionCheckmk Raw Edition (CRE)
Checkmk Version1.6.0p7,1.7.0i1,1.5.0p24
LevelTrivial Change
ClassSecurity Fix
CompatibilityCompatible - no manual interaction needed

The backup target directory was not validated correctly which made it possible for an attacker that has access to WATO backups to compromise the site.

Using this vulnerability it was possible to write backup files to directories that are writable by the site user.

Thanks to Robin `ypid` Schneider.