CVE-2018-12029
unknown
CVSS v3
—
CVSS v2
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VIR risk
—
Description
A race condition in the nginx module in Phusion Passenger 3.x through 5.x before 5.3.2 allows local escalation of privileges when a non-standard passenger_instance_registry_dir with insufficiently strict permissions is configured. Replacing a file with a symlink after the file was created, but before it was chowned, leads to the target of the link being chowned via the path. Targeting sensitive files such as root's crontab file allows privilege escalation.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-12029
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-12029.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 5.0.30-1.1 |
| debian | bullseye | fixed | 5.0.30-1.1 |
| debian | forky | fixed | 5.0.30-1.1 |
| debian | sid | fixed | 5.0.30-1.1 |
| debian | trixie | fixed | 5.0.30-1.1 |
References
- https://blog.phusion.nl/2018/06/12/passenger-5-3-2-various-security-fixes/
- https://www.suse.com/security/cve/CVE-2018-12029.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-12029
- https://blog.phusion.nl/2018/06/12/passenger-5-3-2-various-security-fixes
- https://blog.phusion.nl/passenger-5-3-2
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2018-12029.yml
- https://lists.debian.org/debian-lts-announce/2018/06/msg00007.html
- https://pulsesecurity.co.nz/advisories/phusion-passenger-priv-esc
- https://security.gentoo.org/glsa/201807-02
- https://security-tracker.debian.org/tracker/CVE-2018-12029
Verify integrity in audit chain (admin only). AS-IS.