CVE-2017-11565 Affecting tor package, versions <0.3.1.7-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.08% (37th percentile)

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  • Snyk IDSNYK-DEBIAN12-TOR-1561453
  • published23 Jul 2017
  • disclosed23 Jul 2017

Introduced: 23 Jul 2017

CVE-2017-11565  (opens in a new tab)

How to fix?

Upgrade Debian:12 tor to version 0.3.1.7-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tor package and not the tor package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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).