BSD pseudo-tty 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.
4.1	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in BSD. Affected is an unknown function of the component pseudo-tty. Performing a manipulation results in information disclosure. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in BSD (version now known). This affects some unknown processing of the component pseudo-tty. 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.

The weakness was presented 07/18/1985 by Tom Truscott (Website). It is possible to read the advisory at securitydigest.org. It is possible to initiate the attack remotely. Required for exploitation is a authentication. Technical details are unknown but an exploit is available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at OSVDB (695†). See VDB-94862 for similar entry. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

07/18/1985 🔍
07/18/1985 +0 days 🔍
09/12/2002 +6265 days 🔍
01/02/2017 +5225 days 🔍
07/13/2020 +1288 days 🔍

Sourcesinfo

Advisory: securitydigest.org
Researcher: Tom Truscott
Status: Not defined

GCVE (VulDB): GCVE-100-94863
OSVDB: 695 - BSD pseudo-tty Cross Session Information Disclosure

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/02/2017 17:17
Updated: 07/13/2020 10:16
Changes: 01/02/2017 17:17 (41), 07/13/2020 10:16 (1)
Complete: 🔍
Cache ID: 216::103