Tor up to 0.3.5.9/0.4.1.8/0.4.2.6 resource consumption

Summaryinfo

A vulnerability categorized as problematic has been discovered in Tor up to 0.3.5.9/0.4.1.8/0.4.2.6. Affected by this vulnerability is an unknown functionality. Executing a manipulation can lead to resource consumption. This vulnerability is registered as CVE-2020-10592. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Tor up to 0.3.5.9/0.4.1.8/0.4.2.6 (Network Encryption Software). This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

Tor before 0.3.5.10, 0.4.x before 0.4.1.9, and 0.4.2.x before 0.4.2.7 allows remote attackers to cause a Denial of Service (CPU consumption), aka TROVE-2020-002.

The weakness was published 03/23/2020. This vulnerability was named CVE-2020-10592 since 03/15/2020. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 0.3.5.10, 0.4.1.9 or 0.4.2.7 eliminates this vulnerability.

Similar entry is available at VDB-152021. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Network Encryption Software

Name

• Tor

Version

• 0.3.5.0
• 0.3.5.1
• 0.3.5.2
• 0.3.5.3
• 0.3.5.4
• 0.3.5.5
• 0.3.5.6
• 0.3.5.7
• 0.3.5.8
• 0.3.5.9
• 0.4.1.0
• 0.4.1.1
• 0.4.1.2
• 0.4.1.3
• 0.4.1.4
• 0.4.1.5
• 0.4.1.6
• 0.4.1.7
• 0.4.1.8
• 0.4.2.0
• 0.4.2.1
• 0.4.2.2
• 0.4.2.3
• 0.4.2.4
• 0.4.2.5
• 0.4.2.6

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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