SB2017101708 - Information disclosure in Tor
Published: October 17, 2017
Security Bulletin ID
SB2017101708
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2017-0380)
The vulnerability allows a remote attacker to obtain potentially sensitive information.
The vulnerability exists in the rend_service_intro_established() function in 'or/rendservice.c due to the system may log uninitialized stack contents when a certain hidden service error occurs while SafeLogging is disabled. A remote attacker can use an error message about the construction of an introduction point circuit and gain access to potentially sensitive information from uninitialized stack memory.
Remediation
Install update from vendor's website.