PT-2017-10556 · Tor+1 · Tor+1
Nmathewson
·
Published
2017-09-18
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Updated
2024-06-15
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CVE-2017-0380
CVSS v3.1
5.9
Medium
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
Tor versions 0.2.8.x through 0.2.8.14
Tor versions 0.2.9.x through 0.2.9.11
Tor versions 0.3.0.x through 0.3.0.10
Tor versions 0.3.1.x through 0.3.1.6
Tor versions 0.3.2.x through 0.3.2.0-alpha
Description
The issue allows attackers to obtain sensitive information by leveraging access to the log files of a hidden service. This is because uninitialized stack data is included in an error message about construction of an introduction point circuit when the
rend service intro established function is used and SafeLogging is disabled.Recommendations
For Tor versions 0.2.8.x through 0.2.8.14, update to version 0.2.8.15 or later.
For Tor versions 0.2.9.x through 0.2.9.11, update to version 0.2.9.12 or later.
For Tor versions 0.3.0.x through 0.3.0.10, update to version 0.3.0.11 or later.
For Tor versions 0.3.1.x through 0.3.1.6, update to version 0.3.1.7 or later.
For Tor versions 0.3.2.x through 0.3.2.0-alpha, update to a version later than 0.3.2.0-alpha.
As a temporary workaround, consider enabling SafeLogging to minimize the risk of exploitation.
Fix
Insertion into Log File
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Tor