Tor up to 0.1.1.4 Alpha information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Tor. This impacts an unknown function. The manipulation results in information disclosure. This vulnerability is reported as CVE-2005-2643. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Tor (Network Encryption Software). Affected is some unknown functionality. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

Tor 0.1.0.13 and earlier, and experimental versions 0.1.1.4-alpha and earlier, does not reject certain weak keys when using ephemeral Diffie-Hellman (DH) handshakes, which allows malicious Tor servers to obtain the keys that a client uses for other systems in the circuit.

The bug was discovered 08/11/2005. The weakness was disclosed 08/23/2005 (Website). The advisory is shared for download at secunia.com. This vulnerability is traded as CVE-2005-2643 since 08/21/2005. 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 neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 19536 (GLSA-200508-16 : Tor: Information disclosure), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (21956), Tenable (19536), SecurityFocus (BID 14659†), OSVDB (18560†) and Secunia (SA16424†). 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: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 19536
Nessus Name: GLSA-200508-16 : Tor: Information disclosure
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 55103
OpenVAS Name: FreeBSD Ports: tor
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

08/11/2005 🔍
08/19/2005 +8 days 🔍
08/19/2005 +0 days 🔍
08/21/2005 +2 days 🔍
08/23/2005 +2 days 🔍
08/23/2005 +0 days 🔍
08/25/2005 +2 days 🔍
08/25/2005 +0 days 🔍
08/30/2005 +5 days 🔍
09/06/2005 +7 days 🔍
03/11/2015 +3473 days 🔍
06/09/2019 +1551 days 🔍

Sourcesinfo

Advisory: secunia.com⛔
Status: Confirmed

CVE: CVE-2005-2643 (🔍)
GCVE (CVE): GCVE-0-2005-2643
GCVE (VulDB): GCVE-100-26112
X-Force: 21956
SecurityFocus: 14659 - Tor Cryptographic Handshake Remote Information Disclosure Vulnerability
Secunia: 16424 - Tor Cryptographic Handshake Vulnerability, Less Critical
OSVDB: 18560 - Tor - Cryptographic Handshake - Remote Information Disclosure Issue
SecurityTracker: 1014739
Vulnerability Center: 9109 - Tor\x27s Weak Implementation of Diffie-Hellman Handshake, Medium

Entryinfo

Created: 03/11/2015 23:39
Updated: 06/09/2019 09:42
Changes: 03/11/2015 23:39 (70), 06/09/2019 09:42 (13)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you know our Splunk app?

Download it now for free!