Authorization Bypass via TOCTOU in Grafana Datasource Deletion by Name
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in v12.4.1
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
A time-of-create-to-time-of-use (TOCTOU) vulnerability lets recently deleted-then-recreated data sources be re-deleted without permission to do so. This requires several very stringent conditions to be met: • The attacker must have admin access to the specific datasource prior to its first deletion. • Upon deletion, all steps within the attack must happen within the next 30 seconds and on the same pod of Grafana. • The attacker must delete the datasource, then someone must recreate it. • The new datasource must not have the attacker as an admin. • The new datasource must have the same UID as the prior datasource. These are randomised by default. • The datasource can now be re-deleted by the attacker. • Once 30 seconds are up, the attack is spent and cannot be repeated. • No datasource with any other UID can be attacked.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Grafana Grafana
From v11.0.0 · fixed in v12.4.1