Bug 2025095 (CVE-2021-22929) - CVE-2021-22929 tor: v2 onion service metadata leak on disk
Summary: CVE-2021-22929 tor: v2 onion service metadata leak on disk
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-22929
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2025096 2025097
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-11-19 20:46 UTC by Pedro Sampaio
Modified: 2021-11-19 21:18 UTC (History)
7 users (show)

Fixed In Version:
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Last Closed: 2021-11-19 21:18:39 UTC
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Description Pedro Sampaio 2021-11-19 20:46:21 UTC 
tor from 0.4.5.8 before 0.4.6.8 would log v2 onion services access attempt warnings on disk excessively, allowing time-correlation.

  o Minor bugfixes (onion service, TROVE-2021-008):
    - Only log v2 access attempts once total, in order to not pollute
      the logs with warnings and to avoid recording the times on disk
      when v2 access was attempted. Note that the onion address was
      _never_ logged. This counts as a Low-severity security issue.
      Fixes bug 40474; bugfix on 0.4.5.8.

References:

https://gitlab.torproject.org/tpo/core/tor/-/issues/40474
https://gitlab.torproject.org/tpo/core/tor/-/commit/602dcd8e3774b09242787ba3b0f0e0599530638a
Comment 1 Pedro Sampaio 2021-11-19 20:46:44 UTC 
Created tor tracking bugs for this issue:

Affects: epel-all [bug 2025097]
Affects: fedora-all [bug 2025096]
Comment 2 Product Security DevOps Team 2021-11-19 21:18:37 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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