CVE-2020-13882

CISOfy Lynis before 3.0.0 has Incorrect Access Control because of a TOCTOU race condition. The routine to check the log and report file permissions was not working as intended and could be bypassed locally. Because of the race, an unprivileged attacker can set up a log and report file, and control that up to the point where the specific routine is doing its check. After that, the file can be removed, recreated, and used for additional attacks.

References

Affected packages

Git / github.com/cisofy/lynis

Affected ranges

Type: GIT
Repo: https://github.com/cisofy/lynis
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

05ef9547ae42c9885c84058c575b01ef9ec903cf

Affected versions

1.*

1.6.1

1.6.2

1.6.3

1.6.4

2.*

2.0.0

2.1.0

2.1.1

2.2.0

2.3.0

2.3.1

2.3.2

2.3.3

2.3.4

2.4.0

2.4.1

2.4.2

2.4.3

2.4.4

2.4.5

2.4.6

2.4.7

2.4.8

2.5.0

2.5.1

2.5.2

2.5.3

2.5.4

2.5.5

2.5.6

2.5.7

2.5.8

2.5.9

2.6.0

2.6.1

2.6.2

2.6.3

2.6.4

2.6.5

2.6.6

2.6.7

2.6.8

2.6.9

2.7.0

2.7.1

2.7.2

2.7.3

2.7.4

2.7.5