CVE-2009-0654
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…
Does this matter?
Lower severity and a low EPSS score (2.12%). Track it; it rarely justifies an emergency change on its own.
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."
- CVSS 2.0
- 5.1 MEDIUMAV:N/AC:H/Au:N/C:P/I:P/A:P
- EPSS
- 2.12% probability · 81th percentile
- CISA KEV
- Not listed
- Affected
- tor/tor
- Source
- cve@mitre.org
References
- 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.pdfExploit
- 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.pdfExploit
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.