Bug 486706 (CVE-2009-0654)

Summary: CVE-2009-0654 tor: allows breaking its anonymity via single cell
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: rh-bugzilla
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
URL: http://www.blackhat.com/presentations/bh-dc-09/Fu/BlackHat-DC-09-Fu-Break-Tors-Anonymity.pdf
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2011-01-20 21:46:27 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Jan Lieskovsky 2009-02-21 10:43:34 UTC 
Common Vulnerabilities and Exposures assigned an identifier CVE-2009-0654 to
the following vulnerability:

Tor 0.2.0.28, and probably 0.2.0.34 and earlier, allows remote
attackers, with control of an entry router and an exit router, to
confirm that a sender and receiver are communicating via vectors
involving (1) replaying, (2) modifying, (3) inserting, or (4) deleting
a single cell, and then observing cell recognition errors at the exit
router. NOTE: the vendor disputes the significance of this issue,
noting that the product's design "accepted end-to-end correlation as
an attack that is too expensive to solve."

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0654
http://blog.torproject.org/blog/one-cell-enough
http://www.blackhat.com/html/bh-dc-09/bh-dc-09-archives.html#Fu
http://www.blackhat.com/presentations/bh-dc-09/Fu/BlackHat-DC-09-Fu-Break-Tors-Anonymity.pdf
Comment 1 Vincent Danen 2011-01-20 21:46:27 UTC 
We do not have any supported products with tor 0.2.0.x, so closing this.