CVE-2017-0380 Information disclosure in Tor before 0.3.1.7
Attackers with log access can read sensitive uninitialized stack data from Tor hidden service logs when SafeLogging is disabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-0380?
CVE-2017-0380 is a medium-severity vulnerability in Tor before 0.3.1.7, published on 18 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The rend_service_intro_established function in or/rendservice.c in Tor before 0.2.8.15, 0.2.9.x before 0.2.9.12, 0.3.0.x before 0.3.0.11, 0.3.1.x before 0.3.1.7, and 0.3.2.x before 0.3.2.1-alpha, when SafeLogging is disabled, allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service, because uninitialized stack data is included in an error message about construction of an introduction point circuit.
Weakness: CWE-532
Which versions are affected by CVE-2017-0380?
It affects 1 product.
Products include Torproject Tor.
How do I fix CVE-2017-0380?
Upgrade to a fixed version.
Is CVE-2017-0380 being exploited?
There is no known exploitation of CVE-2017-0380 in the wild and no public exploit code.
Other vulnerabilities in Tor before 0.3.1.7
Sources
Also known as DEBIAN-CVE-2017-0380, DSA-3993-1, GHSA-rjc9-v6hh-hq3j, MGASA-2017-0353, UBUNTU-CVE-2017-0380.