Bug 1940631 (CVE-2021-28089) - CVE-2021-28089 tor: dump_desc function was called incorrectly in several places in a way that could lead to excessive CPU usage
Summary: CVE-2021-28089 tor: dump_desc function was called incorrectly in several plac...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-28089
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1940632 1940633
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-03-18 18:47 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-03-18 19:51 UTC (History)
5 users (show)

Fixed In Version:
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Last Closed: 2021-03-18 19:51:51 UTC
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Description Guilherme de Almeida Suckevicz 2021-03-18 18:47:42 UTC 
A flaw was found in Tor because the dump_desc() function that is used to dump unparseable information to disk was called incorrectly in several places, in a way that could lead to excessive CPU usage. This bug is also tracked as TROVE-2021-001.

References:
https://gitlab.torproject.org/tpo/core/tor/-/issues/40286
https://blog.torproject.org/node/2009
Comment 1 Guilherme de Almeida Suckevicz 2021-03-18 18:48:12 UTC 
Created tor tracking bugs for this issue:

Affects: epel-all [bug 1940633]
Affects: fedora-all [bug 1940632]
Comment 2 Product Security DevOps Team 2021-03-18 19:51:51 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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