Tor 0.2.1.5 Hidden Service denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Tor 0.2.1.5 (Network Encryption Software). This affects some unknown functionality of the component Hidden Service Handler. 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.

The weakness was published 04/06/2015 as confirmed mailinglist post (oss-sec). The advisory is shared at seclists.org. This vulnerability is uniquely identified as CVE-2015-2929 since 04/06/2015. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 84556 (GLSA-201507-02 : Tor: Denial of Service), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo 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 vulnerability is also documented in the databases at X-Force (102105) and Tenable (84556). Further details are available at blog.torproject.org. Similar entry is available at 74684.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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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

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VulDB Base Score: 🔍
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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84556
Nessus Name: GLSA-201507-02 : Tor: Denial of Service
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

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 🔍
04/06/2015 +0 days 🔍
04/10/2015 +4 days 🔍
10/09/2015 +182 days 🔍
05/03/2022 +2398 days 🔍

Sourcesinfo

Advisory: 15601
Status: Confirmed

CVE: CVE-2015-2929 (🔍)
OVAL: 🔍

X-Force: 102105 - Tor hidden service denial of service
Vulnerability Center: 53314 - 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-2015-2929, Medium
SecurityFocus: 73938 - Tor CVE-2015-2929 Denial of Service Vulnerability

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 04/10/2015 09:35
Updated: 05/03/2022 08:12
Changes: 04/10/2015 09:35 (57), 02/04/2018 10:19 (10), 05/03/2022 08:06 (3), 05/03/2022 08:09 (18), 05/03/2022 08:12 (1)
Complete: 🔍

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