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.

CVSS v3.0 4.2 MEDIUM
CVSS v2.0 3.7 LOW

4.2^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

3.7^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:H/Au:N/C:P/I:P/A:P

Exploitability : 1.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity HIGH

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://cisofy.com/security/cve/cve-2020-13882/	Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JDCHEKNR3HPJRNHE5PYKFH5GNBADTPA7/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFHIX6RTHCK37FXMAAXP4KGAMLUFDUD/	Mailing List Third Party Advisory
https://cwe.mitre.org/data/definitions/367.html	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:cisofy:lynis:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:fedoraproject:fedora:31:::::::*
	cpe:2.3:o:fedoraproject:fedora:32:::::::*

Information

Published : 2020-06-18 11:15

Updated : 2022-11-07 05:37

NVD link : CVE-2020-13882

Mitre link : CVE-2020-13882

JSON object : View

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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Products Affected

cisofy

lynis

fedoraproject

fedora

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