CVE-2022-42917
CVE-2022-42917
In FRRouting FRR before 8.5, the service user (usually frr) can escalate its privileges to root by monitoring the configuration directory (/etc/frr) and replacing config files upon creation with, for example, symlinks to change the ownership of arbitrary files. This is a TOCTOU Race Condition caused by a combination of touch and chown.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
No affected-product ranges reported in collected sources.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 6.7 medium |
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://bugzilla.suse.com/show_bug.cgi?id=1204124[email protected]
- https://frrouting.org/security/cve-2022-42917/[email protected]
- https://github.com/FRRouting/frr/commit/972cdc560e339d70c0ee5fb70ec636ab78f00bca[email protected]
- https://github.com/FRRouting/frr/compare/frr-8.4...frr-8.5[email protected]
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