CVE-2018-14722 — An issue was discovered in evaluate_auto_mountpoint in btrfsmaintenance-function

An issue was discovered in evaluate_auto_mountpoint in btrfsmaintenance-functions in btrfsmaintenance through 0.4.1. Code execution as root can occur via a specially crafted filesystem label if btrfs-{scrub,balance,trim} are set to auto in /etc/sysconfig/btrfsmaintenance (this is

01What is this vulnerability?

An issue was discovered in evaluate_auto_mountpoint in btrfsmaintenance-functions in btrfsmaintenance through 0.4.1. Code execution as root can occur via a specially crafted filesystem label if btrfs-{scrub,balance,trim} are set to auto in /etc/sysconfig/btrfsmaintenance (this is not the default, though).

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-08-15T18:00:00.000Z
• Last modified: 2024-08-05T09:38:13.109Z

09References

• bugzilla.suse.com — https://bugzilla.suse.com/show_bug.cgi?id=1102721
• www.openwall.com — http://www.openwall.com/lists/oss-security/2018/08/14/7
• www.openwall.com — http://www.openwall.com/lists/oss-security/2019/06/27/7
• www.openwall.com — http://www.openwall.com/lists/oss-security/2019/06/28/1
• www.openwall.com — http://www.openwall.com/lists/oss-security/2019/06/28/2