tor up to 0.1.1.14 tor_realloc input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in tor up to 0.1.1.14. This vulnerability affects the function tor_realloc. Such manipulation leads to input validation. This vulnerability is traded as CVE-2011-0491. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in tor up to 0.1.1.14 (Network Encryption Software). It has been rated as problematic. Affected by this issue is the function tor_realloc. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

The tor_realloc function in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not validate a certain size value during memory allocation, which might allow remote attackers to cause a denial of service (daemon crash) via unspecified vectors, related to "underflow errors."

The weakness was shared 01/19/2011 (Website). The advisory is available at gitweb.torproject.org. This vulnerability is handled as CVE-2011-0491. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 53901 (Fedora 14 : tor-0.2.1.29-1400.fc14 (2011-0642)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks.

Upgrading to version 0.1.1.15 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (64888), Tenable (53901), SecurityFocus (BID 45953†) and Vulnerability Center (SBV-31915†). The entries VDB-56116, VDB-56115, VDB-56113 and VDB-56112 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: Input validation
CWE: CWE-20
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: 53901
Nessus Name: Fedora 14 : tor-0.2.1.29-1400.fc14 (2011-0642)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 863090
OpenVAS Name: Fedora Update for tor FEDORA-2011-0642
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: tor 0.1.1.15

Timelineinfo

01/18/2011 🔍
01/19/2011 +1 days 🔍
01/19/2011 +0 days 🔍
01/19/2011 +0 days 🔍
06/20/2011 +152 days 🔍
03/19/2015 +1368 days 🔍
10/12/2021 +2399 days 🔍

Sourcesinfo

Advisory: 2324
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-0491 (🔍)
GCVE (CVE): GCVE-0-2011-0491
GCVE (VulDB): GCVE-100-56114
X-Force: 64888
SecurityFocus: 45953
Vulnerability Center: 31915 - Tor before 0.2.1.29 and 0.2.2-0.2.2.20-alpha Remote DoS Vulnerability via Unspecified Vectors, Medium

See also: 🔍

Entryinfo

Created: 03/19/2015 23:27
Updated: 10/12/2021 15:11
Changes: 03/19/2015 23:27 (58), 03/24/2017 12:07 (6), 10/12/2021 15:06 (5), 10/12/2021 15:11 (1)
Complete: 🔍
Cache ID: 216:E83:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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