Privilege escalation in Apparmor
CVE-2017-6507
An issue was discovered in AppArmor before 2.12. Incorrect handling of unknown AppArmor profiles in AppArmor init scripts, upstart jobs, and/or systemd unit files allows an attacker to possibly have increased attack surfaces of processes that were intended to be confined by AppArmor. This is due to the common logic to handle 'restart' operations removing AppArmor profiles that aren't found in the typical filesystem locations, such as /etc/apparmor.d/. Userspace projects that manage their own AppArmor profiles in atypical directories, such as what's done by LXD and Docker, are affected by this flaw in the AppArmor init script logic.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.016 (75.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Apparmor
- Canonical Ubuntu Core — versions 15.04
- Canonical Ubuntu Touch — versions 15.04
Weakness classification (CWE)
References
- bazaar.launchpad.net/~apparmor-dev/apparmor/master/revision/3648 (Patch, Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/97223 (vdb-entry)
- people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-6507.html (Third Party Advisory)
- bugs.launchpad.net/apparmor/+bug/1668892 (Patch, Third Party Advisory, Issue Tracking)
- bazaar.launchpad.net/~apparmor-dev/apparmor/master/revision/3647 (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2017-6507?
- CVE-2017-6507 is a medium-severity vulnerability in Apparmor, classified under Improper Privilege Management. CVSS score: 5.9/10. Published 2017-03-24.
- How severe is CVE-2017-6507?
- Medium severity. CVSS v3 base score is 5.9 out of 10.