Tor 0.2.1.6 Hidden Service Hang denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Tor 0.2.1.6. Impacted is an unknown function of the component Hidden Service Handler. Such manipulation leads to denial of service (Hang). This vulnerability is traded as CVE-2015-2928. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Tor 0.2.1.6 (Network Encryption Software). Affected by this issue is an unknown functionality of the component Hidden Service Handler. The manipulation with an unknown input leads to a denial of service vulnerability (Hang). 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 weakness was shared 04/06/2015 as confirmed mailinglist post (oss-sec). The advisory is shared for download at seclists.org. This vulnerability is handled as CVE-2015-2928 since 04/06/2015. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 82624 (Debian DSA-3216-1 : tor - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175355 (Debian Security Update for tor (DSA 3216-1)).

Upgrading to version 0.2.5.12 or 0.2.6.7 eliminates this vulnerability. The upgrade is hosted for download at blog.torproject.org.

The vulnerability is also documented in the databases at X-Force (102104), Tenable (82624), SecurityFocus (BID 73932†) and Vulnerability Center (SBV-53313†). The entry VDB-74685 is related to this item. Once again VulDB remains the best 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: 6.4
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 82624
Nessus Name: Debian DSA-3216-1 : tor - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for tor FEDORA-2015-5890
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Tor 0.2.5.12/0.2.6.7

Timelineinfo

01/01/2012 🔍
04/06/2015 +1191 days 🔍
04/06/2015 +0 days 🔍
04/08/2015 +2 days 🔍
04/10/2015 +2 days 🔍
10/09/2015 +182 days 🔍
05/03/2022 +2398 days 🔍

Sourcesinfo

Advisory: 15600
Status: Confirmed

CVE: CVE-2015-2928 (🔍)
GCVE (CVE): GCVE-0-2015-2928
GCVE (VulDB): GCVE-100-74684

OVAL: 🔍

X-Force: 102104 - Tor hidden service denial of service
SecurityFocus: 73932
Vulnerability Center: 53313 - Tor 0.2.6 - 0.2.6.6, 0.2.5 - 0.2.5.11, 0.2.4 - 0.2.4.26 Remote DoS via Crafted Data - CVE-2015-2928, Medium

See also: 🔍

Entryinfo

Created: 04/10/2015 09:35
Updated: 05/03/2022 08:00
Changes: 04/10/2015 09:35 (61), 02/04/2018 10:18 (6), 05/03/2022 07:48 (3), 05/03/2022 07:53 (18), 05/03/2022 08:00 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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