Sendmail 7.6 Trojan Horse privileges management

CVSS Meta Temp Score
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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.
8.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Sendmail 7.6. It has been classified as critical. This issue affects some unknown processing. This manipulation causes privileges management (Trojan Horse). This vulnerability is registered as CVE-1999-0661. Furthermore, an exploit is available. This vulnerability has a historic impact because of its background and how it was received. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Sendmail 7.6 (Mail Server Software). It has been declared as critical. Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a privileges management vulnerability (Trojan Horse). The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A system is running a version of software that was replaced with a Trojan Horse at one of its distribution points, such as (1) TCP Wrappers 7.6, (2) util-linux 2.9g, (3) wuarchive ftpd (wuftpd) 2.2 and 2.1f, (4) IRC client (ircII) ircII 2.2.9, (5) OpenSSH 3.4p1, or (6) Sendmail 8.12.6.

The weakness was published 01/01/1999 with CERT as not defined advisory (CERT.org). The advisory is shared at cert.org. This vulnerability is known as CVE-1999-0661. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/11/2025). MITRE ATT&CK project uses the attack technique T1068 for this issue. Due to its background and reception, this vulnerability has a historic impact.

It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (10313), Exploit-DB (21919), SecurityFocus (BID 5921†) and Vulnerability Center (SBV-4359†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.8

VulDB Base Score: 9.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Trojan Horse
Class: Privileges management / Trojan Horse
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/01/1999 🔍
01/01/1999 +0 days 🔍
01/01/1999 +0 days 🔍
10/08/2002 +1376 days 🔍
05/24/2004 +594 days 🔍
06/19/2014 +3678 days 🔍
01/11/2025 +3859 days 🔍

Sourcesinfo

Advisory: cert.org
Organization: CERT
Status: Confirmed

CVE: CVE-1999-0661 (🔍)
GCVE (CVE): GCVE-0-1999-0661
GCVE (VulDB): GCVE-100-14425
X-Force: 10313
SecurityFocus: 5921 - Sendmail Trojan Horse Vulnerability
Vulnerability Center: 4359 - Wu-FTP Version 2.1f or 2.2 Might Contain Backdoor Password, Critical

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

Entryinfo

Created: 06/20/2014 01:46
Updated: 01/11/2025 23:23
Changes: 06/20/2014 01:46 (61), 05/21/2019 17:11 (1), 10/20/2024 13:39 (17), 01/11/2025 23:23 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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