Description
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."
Published: 2009-02-20
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2009-0657 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."
History

Wed, 28 May 2025 14:45:00 +0000

Type Values Removed Values Added
References

Thu, 22 May 2025 04:30:00 +0000


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-09-17T03:13:48.226Z

Reserved: 2009-02-20T00:00:00.000Z

Link: CVE-2009-0654

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2009-02-20T19:30:00.313

Modified: 2026-04-23T00:35:47.467

Link: CVE-2009-0654

cve-icon Redhat

Severity : Low

Publid Date: 2009-02-16T00:00:00Z

Links: CVE-2009-0654 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses