Vulnerability in Debian Tor
CVE-2017-11565
debian/tor.init in the Debian tor_0.2.9.11-1~deb9u1 package for Tor was designed to execute aa-exec from the standard system pathname if the apparmor package is installed, but implements this incorrectly (with a wrong assumption that the specific pathname would remain the same forever), which allows attackers to bypass intended AppArmor restrictions by leveraging the silent loss of this protection mechanism. NOTE: this does not affect systems, such as default Debian stretch installations, on which Tor startup relies on a systemd unit file (instead of this tor.init script).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.013 (69.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Debian Tor — versions 0.2.9.11-1
References
- www.securityfocus.com/bid/99933 (VDB Entry, Third Party Advisory, vdb-entry)
- bugs.debian.org/869153 (Mailing List, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-11565?
- CVE-2017-11565 is a high-severity vulnerability in Debian Tor. CVSS score: 7.5/10. Published 2017-07-23.
- How severe is CVE-2017-11565?
- High severity. CVSS v3 base score is 7.5 out of 10.