Tor up to 0.2.0.33 denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Tor. This impacts an unknown function. The manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2009-0937. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Tor (Network Encryption Software). It has been rated as problematic. This issue affects an unknown code. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

Unspecified vulnerability in Tor before 0.2.0.34 allows directory mirrors to cause a denial of service via unknown vectors.

The bug was discovered 02/09/2009. The weakness was disclosed 03/17/2009 (Website). The advisory is shared at archives.seul.org. The identification of this vulnerability is CVE-2009-0937 since 03/17/2009. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 35672 (FreeBSD : tor -- multiple vulnerabilities (78f5606b-f9d1-11dd-b79c-0030843d3802)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (35672), SecurityFocus (BID 33713†), OSVDB (54022†), Secunia (SA33880†) and Vulnerability Center (SBV-21540†). The entries VDB-47179, VDB-47178 and VDB-47176 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 35672
Nessus Name: FreeBSD : tor -- multiple vulnerabilities (78f5606b-f9d1-11dd-b79c-0030843d3802)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63352
OpenVAS Name: FreeBSD Ports: tor
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/09/2009 🔍
02/09/2009 +0 days 🔍
02/09/2009 +0 days 🔍
02/10/2009 +1 days 🔍
02/13/2009 +3 days 🔍
02/13/2009 +0 days 🔍
03/17/2009 +32 days 🔍
03/17/2009 +0 days 🔍
03/17/2009 +0 days 🔍
04/13/2009 +27 days 🔍
03/17/2015 +2164 days 🔍
09/01/2019 +1629 days 🔍

Sourcesinfo

Advisory: archives.seul.org
Status: Not defined

CVE: CVE-2009-0937 (🔍)
GCVE (CVE): GCVE-0-2009-0937
GCVE (VulDB): GCVE-100-47177
SecurityFocus: 33713 - Tor Multiple Denial of Service Vulnerabilities
Secunia: 33880
OSVDB: 54022 - CVE-2009-0937 - Tor - Unspecified Issue
Vulnerability Center: 21540 - Tor Prior to 0.2.0.34 Unspecified Directory Mirrors DoS Vulnerability via Unknown Vectors, Low

See also: 🔍

Entryinfo

Created: 03/17/2015 23:38
Updated: 09/01/2019 12:29
Changes: 03/17/2015 23:38 (70), 09/01/2019 12:29 (5)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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