Tor connection_edge_process_relay_cell_not_open() spoofing
| tor-connectionedge-spoofing (51377) |  Medium Risk |
Description:
Tor could allow a remote attacker to conduct spoofing attacks, caused by an error in the connection_edge_process_relay_cell_not_open() function. A remote attacker could exploit this vulnerability using specially-crafted exit relays to spoof a client's DNS request and redirect it to an internal IP address.
*CVSS:
| Base Score: | 5 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | None |
| Integrity Impact: | Partial |
| Availability Impact: | None |
| Temporal Score: | 3.7 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Upgrade to the latest version of Tor (0.2.0.35 or later), available from the Tor Web site. See References.
References:
- or-announce Mailing List, Thu, 25 Jun 2009 20:24:02 -0400: Tor 0.2.0.35 is released.
- Tor Web site: Tor: anonymity online.
- BID-35505: Tor Denial of Service and DNS Spoofing Vulnerabilities
- CVE-2009-2426: The connection_edge_process_relay_cell_not_open function in src/or/relay.c in Tor 0.2.x before 0.2.0.35 and 0.1.x before 0.1.2.8-beta allows exit relays to have an unspecified impact by causing controllers to accept DNS responses that redirect to an internal IP address via unknown vectors. NOTE: some of these details are obtained from third party information.
- OSVDB ID: 55341: Tor src/or/relay.c Exit Relay Client DNS Response Spoofing
- SA35546: Tor DNS Spoofing and Denial of Service Vulnerabilities
- VUPEN/ADV-2009-1716: Tor Remote Denial of Service and DNS Spoofing Vulnerabilities
Platforms Affected:
- Tor Tor 0.1.0.1
- Tor Tor 0.1.0.10
- Tor Tor 0.1.0.11
- Tor Tor 0.1.0.12
- Tor Tor 0.1.0.13
- Tor Tor 0.1.0.14
- Tor Tor 0.1.0.15
- Tor Tor 0.1.0.16
- Tor Tor 0.1.0.17
- Tor Tor 0.1.0.18
- Tor Tor 0.1.0.19
- Tor Tor 0.1.0.2
- Tor Tor 0.1.0.3
- Tor Tor 0.1.0.4
- Tor Tor 0.1.0.5
- Tor Tor 0.1.0.6
- Tor Tor 0.1.0.7
- Tor Tor 0.1.0.8
- Tor Tor 0.1.0.9
- Tor Tor 0.1.1
- Tor Tor 0.1.1.1 Alpha
- Tor Tor 0.1.1.1
- Tor Tor 0.1.1.10
- Tor Tor 0.1.1.10 Alpha
- Tor Tor 0.1.1.11
- Tor Tor 0.1.1.12
- Tor Tor 0.1.1.13
- Tor Tor 0.1.1.14
- Tor Tor 0.1.1.15
- Tor Tor 0.1.1.16
- Tor Tor 0.1.1.17
- Tor Tor 0.1.1.18
- Tor Tor 0.1.1.19
- Tor Tor 0.1.1.2
- Tor Tor 0.1.1.2 Alpha
- Tor Tor 0.1.1.20
- Tor Tor 0.1.1.21
- Tor Tor 0.1.1.22
- Tor Tor 0.1.1.23
- Tor Tor 0.1.1.25
- Tor Tor 0.1.1.26
- Tor Tor 0.1.1.3
- Tor Tor 0.1.1.3 Alpha
- Tor Tor 0.1.1.4
- Tor Tor 0.1.1.4 Alpha
- Tor Tor 0.1.1.5 Alpha
- Tor Tor 0.1.1.5
- Tor Tor 0.1.1.6 Alpha
- Tor Tor 0.1.1.6
- Tor Tor 0.1.1.7 Alpha
- Tor Tor 0.1.1.7
- Tor Tor 0.1.1.8 Alpha
- Tor Tor 0.1.1.8
- Tor Tor 0.1.1.9 Alpha
- Tor Tor 0.1.1.9
- Tor Tor 0.1.2.1 Alpha-cvs
- Tor Tor 0.1.2.14
- Tor Tor 0.1.2.15
- Tor Tor 0.1.2.16
- Tor Tor 0.1.2.2
- Tor Tor 0.1.2.3 Alpha
- Tor Tor 0.1.2.4
- Tor Tor 0.1.2.5
- Tor Tor 0.1.2.5 Alpha
- Tor Tor 0.1.2.6 Alpha
- Tor Tor 0.1.2.7 Alpha
- Tor Tor 0.2.0.1 Alpha
- Tor Tor 0.2.0.10 Alpha
- Tor Tor 0.2.0.11 Alpha
- Tor Tor 0.2.0.12 Alpha
- Tor Tor 0.2.0.13 Alpha
- Tor Tor 0.2.0.14 Alpha
- Tor Tor 0.2.0.15 Alpha
- Tor Tor 0.2.0.16 Alpha
- Tor Tor 0.2.0.17 Alpha
- Tor Tor 0.2.0.18 Alpha
- Tor Tor 0.2.0.19 Alpha
- Tor Tor 0.2.0.2 Alpha
- Tor Tor 0.2.0.20 Alpha
- Tor Tor 0.2.0.21 Alpha
- Tor Tor 0.2.0.22 Alpha
- Tor Tor 0.2.0.23 Alpha
- Tor Tor 0.2.0.24 Alpha
- Tor Tor 0.2.0.25 Alpha
- Tor Tor 0.2.0.26 Alpha
- Tor Tor 0.2.0.27 Alpha
- Tor Tor 0.2.0.28 Alpha
- Tor Tor 0.2.0.29 Alpha
- Tor Tor 0.2.0.3 Alpha
- Tor Tor 0.2.0.31
- Tor Tor 0.2.0.31 Alpha
- Tor Tor 0.2.0.32
- Tor Tor 0.2.0.33
- Tor Tor 0.2.0.34 Alpha
- Tor Tor 0.2.0.34
- Tor Tor 0.2.0.4 Alpha
- Tor Tor 0.2.0.5 Alpha
- Tor Tor 0.2.0.6 Alpha
- Tor Tor 0.2.0.7 Alpha
- Tor Tor 0.2.0.8 Alpha
- Tor Tor 0.2.0.9 Alpha
Reported:
Jun 25, 2009
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.