Tor 0.2.2.38 or/policies.c compare_tor_addr_to_addr_policy denial of service

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Tor 0.2.2.38. This impacts the function compare_tor_addr_to_addr_policy of the file or/policies.c. The manipulation results in denial of service. This vulnerability is reported as CVE-2012-4419. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Tor 0.2.2.38 (Network Encryption Software). Affected is the function compare_tor_addr_to_addr_policy of the file or/policies.c. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a zero-valued port field that is not properly handled during policy comparison.

The weakness was disclosed 09/11/2012 as 2012-4419 as not defined posting (MITRE CVE). The advisory is shared for download at cve.mitre.org. The public release has been coordinated in cooperation with the vendor. This vulnerability is traded as CVE-2012-4419 since 08/21/2012. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 74768 (openSUSE Security Update : tor (openSUSE-SU-2012:1278-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165313 (SUSE Security Update (openSUSE-SU-2012:1278-1)).

Upgrading to version 0.2.2.39 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (78604), Tenable (74768), SecurityFocus (BID 55519†), OSVDB (85490†) and Secunia (SA50578†). The entry VDB-6313 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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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: 74768
Nessus Name: openSUSE Security Update : tor (openSUSE-SU-2012:1278-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

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

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Tor 0.2.2.39

Timelineinfo

08/21/2012 🔍
09/11/2012 +21 days 🔍
09/11/2012 +0 days 🔍
09/11/2012 +0 days 🔍
09/12/2012 +1 days 🔍
09/14/2012 +2 days 🔍
09/14/2012 +0 days 🔍
09/14/2012 +0 days 🔍
09/21/2012 +7 days 🔍
12/03/2012 +73 days 🔍
06/13/2014 +557 days 🔍
04/13/2021 +2496 days 🔍

Sourcesinfo

Advisory: 2012-4419
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-4419 (🔍)
GCVE (CVE): GCVE-0-2012-4419
GCVE (VulDB): GCVE-100-6312

OVAL: 🔍

X-Force: 78604
SecurityFocus: 55519 - Tor Multiple Denial of Service Vulnerabilities
Secunia: 50578 - Tor Two Assertion Failure Denial of Service Vulnerabilities, Less Critical
OSVDB: 85490
Vulnerability Center: 37481 - Tor \x27compare_tor_to_addr_policy\x27 Function Allows Remote DoS via a Zero Valued Port Field, Medium

See also: 🔍

Entryinfo

Created: 09/21/2012 10:03
Updated: 04/13/2021 08:09
Changes: 09/21/2012 10:03 (83), 04/22/2017 09:16 (4), 04/13/2021 08:09 (3)
Complete: 🔍
Committer: olku
Cache ID: 216::103

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