CVE-2022-42917
6.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FRRouting | FRRouting | 0 < 4.5 | affected |
Weaknesses
- CWE-367: CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
- https://bugzilla.suse.com/show_bug.cgi?id=1204124
- https://frrouting.org/security/cve-2022-42917/
- https://github.com/FRRouting/frr/commit/972cdc560e339d70c0ee5fb70ec636ab78f00bca
- https://github.com/FRRouting/frr/compare/frr-8.4…frr-8.5
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