Vulnerability Monitor

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CVE-2021-34549

An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005. Hashing is mishandled for certain retrieval of circuit data. Consequently. an attacker can trigger the use of an attacker-chosen circuit ID to cause algorithm inefficiency.

Published

2021-06-29T12:15:08.643

Last Modified

2024-11-21T06:10:39.140

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-400
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application torproject tor < 0.3.5.15 Yes
Application torproject tor < 0.4.4.9 Yes
Application torproject tor < 0.4.5.9 Yes
Application torproject tor < 0.4.6.5 Yes
References