VDB-94835 · XFDB 130 · OSVDB 12551

Mail Server EXPN/VRFY/HELP/ESMTP/EHLO 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 (≈)
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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.
5.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Mail Server. This issue affects some unknown processing of the component EXPN/VRFY/HELP/ESMTP/EHLO. The manipulation leads to information disclosure. Remote exploitation of the attack is possible. Furthermore, an exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Mail Server (Mail Server Software) (version now known). This issue affects some unknown processing of the component EXPN/VRFY/HELP/ESMTP/EHLO. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality.

The bug was discovered 08/01/1982. The weakness was published 08/01/1982. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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. Attack attempts may be identified with Snort ID 660.

The vulnerability is also documented in the databases at X-Force (130) and OSVDB (12551†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍
Snort ID: 660

Timelineinfo

08/01/1982 🔍
08/01/1982 +0 days 🔍
08/01/1982 +0 days 🔍
12/22/2004 +8179 days 🔍
01/02/2017 +4393 days 🔍
07/12/2020 +1287 days 🔍

Sourcesinfo

Status: Not defined

GCVE (VulDB): GCVE-100-94835
X-Force: 130
OSVDB: 12551 - Multiple Mail Server EXPN/VRFY/HELP/ESMTP/EHLO Information Disclosure

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

Entryinfo

Created: 01/02/2017 17:15
Updated: 07/12/2020 20:57
Changes: 01/02/2017 17:15 (40), 07/12/2020 20:57 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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