Linux Kernel 1.2.0 suidperl privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in Linux Kernel 1.2.0 (Operating System) and classified as critical. This issue affects an unknown code block of the component suidperl. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-269. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

the suidperl and sperl program do not give up root privileges when changing uids back to the original users allowing root access.

The issue has been introduced in 03/07/1995. The weakness was shared 06/26/1996. The identification of this vulnerability is CVE-1999-0138. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 477 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (429) and Vulnerability Center (SBV-23429).


  • FreeBSD 2.0/2.0.5/2.1.0
  • HP HP-UX 8/9/10
  • IBM AIX 3.2.5/4





CPE 2.3infoedit

CPE 2.2infoedit


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: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Privilege escalation
CWE: CWE-269
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍


03/07/1995 🔍
06/26/1996 +477 days 🔍
06/26/1996 +0 days 🔍
06/26/1996 +0 days 🔍
09/08/2009 +4822 days 🔍
06/17/2014 +1743 days 🔍
01/07/2016 +569 days 🔍
02/14/2017 +404 days 🔍



Status: Not defined

CVE: CVE-1999-0138 (🔍)
X-Force: 429
Vulnerability Center: 23429 - Suidperl and Sperl Changing UIDs Root Privileges Escalation Vulnerability, High


Created: 06/17/2014 05:07 PM
Updated: 02/14/2017 04:25 PM
Changes: (6) vulnerability_cvss2_nvd_av vulnerability_cvss2_nvd_ac vulnerability_cvss2_nvd_au vulnerability_cvss2_nvd_ci vulnerability_cvss2_nvd_ii vulnerability_cvss2_nvd_ai
Complete: 🔍


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