Tor 0.2.2.37 Relay-List Iteration routerlist.c information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Tor 0.2.2.37. This impacts an unknown function of the file routerlist.c of the component Relay-List Iteration. This manipulation causes information disclosure. This vulnerability appears as CVE-2012-3519. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Tor 0.2.2.37 (Network Encryption Software). Affected by this vulnerability is some unknown processing of the file routerlist.c of the component Relay-List Iteration. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration depending on which relay is chosen, which might allow remote attackers to obtain sensitive information about relay selection via a timing side-channel attack.

The weakness was presented 08/03/2012 by Robert Ransom (arma) as Bug 6530 as not defined posting (oss-sec). It is possible to read the advisory at openwall.com. The public release was coordinated in cooperation with the project team. This vulnerability is known as CVE-2012-3519 since 06/14/2012. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 49 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 62086 (Debian DSA-2548-1 : tor - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks.

Upgrading to version 0.2.2.38 eliminates this vulnerability. The upgrade is hosted for download at gitweb.torproject.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (77999), Tenable (62086), SecurityFocus (BID 55128†), OSVDB (85125†) and Secunia (SA50583†). Additional details are provided at lists.torproject.org. See VDB-6102 and VDB-6104 for similar entries. Be aware that VulDB is the high quality source for 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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 62086
Nessus Name: Debian DSA-2548-1 : tor - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 72177
OpenVAS Name: Debian Security Advisory DSA 2548-1 (tor)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Tor 0.2.2.38

Timelineinfo

06/14/2012 🔍
06/14/2012 +0 days 🔍
08/03/2012 +49 days 🔍
08/03/2012 +0 days 🔍
08/21/2012 +18 days 🔍
08/21/2012 +0 days 🔍
08/25/2012 +4 days 🔍
09/03/2012 +9 days 🔍
09/10/2012 +7 days 🔍
09/14/2012 +4 days 🔍
05/28/2013 +256 days 🔍
04/12/2021 +2876 days 🔍

Sourcesinfo

Advisory: Bug 6530
Researcher: Robert Ransom (arma)
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-3519 (🔍)
GCVE (CVE): GCVE-0-2012-3519
GCVE (VulDB): GCVE-100-6103

OVAL: 🔍

X-Force: 77999
SecurityFocus: 55128 - Tor Multiple Security Vulnerabilities
Secunia: 50583 - Debian update for tor, Less Critical
OSVDB: 85125
Vulnerability Center: 39731 - Tor <0.2.2.38 'routerlist.c\x27 Allows Remote Information Disclosure Vulnerability, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 09/10/2012 10:05
Updated: 04/12/2021 07:53
Changes: 09/10/2012 10:05 (86), 05/01/2017 00:26 (3), 04/12/2021 07:53 (3)
Complete: 🔍
Cache ID: 216:A12:103

Be aware that VulDB is the high quality source for vulnerability data.

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