Slackware Linux 3.6 Net Installer improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Slackware Linux 3.6. Impacted is an unknown function of the component Net Installer. This manipulation causes improper authentication. The identification of this vulnerability is CVE-1999-0421. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Slackware Linux 3.6 (Operating System). It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Net Installer. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

During a reboot after an installation of Linux Slackware 3.6, a remote attacker can obtain root access by logging in to the root account without a password.

The weakness was shared 03/17/1999 by Michael H. Warfield (FIRST) with ISS X-Force as ISS-021 as not defined advisory (X-Force). The advisory is shared at securityfocus.com. This vulnerability is known as CVE-1999-0421. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

After immediately, there has been an exploit disclosed.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (2040), SecurityFocus (BID 338†) and OSVDB (981†). The entry VDB-14571 is related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.4
VulDB Temp Score: 8.0
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

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

03/17/1999 🔍
03/17/1999 +0 days 🔍
03/17/1999 +0 days 🔍
03/17/1999 +0 days 🔍
02/21/2003 +1437 days 🔍
06/20/2014 +4136 days 🔍
04/19/2026 +4320 days 🔍

Sourcesinfo

Advisory: ISS-021⛔
Researcher: Michael H. Warfield (FIRST)
Organization: ISS X-Force
Status: Confirmed

CVE: CVE-1999-0421 (🔍)
GCVE (CVE): GCVE-0-1999-0421
GCVE (VulDB): GCVE-100-14569
X-Force: 2040
SecurityFocus: 338 - Slackware Net Installation Vulnerability
OSVDB: 981 - Slackware Net Installation Null root Password

See also: 🔍

Entryinfo

Created: 06/20/2014 23:01
Updated: 04/19/2026 00:26
Changes: 06/20/2014 23:01 (52), 05/20/2018 11:18 (11), 04/19/2026 00:26 (18)
Complete: 🔍
Cache ID: 216::103

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

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