stunnel 4.04 SIGCHLD Signal denial of service

CVSS Meta Temp Score
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CTI Interest Score
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2.9$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in stunnel 4.04. The affected element is an unknown function of the component SIGCHLD Signal Handler. The manipulation leads to denial of service. This vulnerability is documented as CVE-2002-1563. There is not any exploit available.

Detailsinfo

A vulnerability was found in stunnel 4.04. It has been rated as problematic. This issue affects some unknown processing of the component SIGCHLD Signal Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

stunnel 4.0.3 and earlier allows attackers to cause a denial of service (crash) via SIGCHLD signal handler race conditions that cause an inconsistency in the child counter.

The weakness was released 05/12/2003 (Website). It is possible to read the advisory at redhat.com. The identification of this vulnerability is CVE-2002-1563 since 04/23/2003. The exploitation is known to be difficult. 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 scanner Nessus provides a plugin with the ID 12406 (RHEL 2.1 : stunnel (RHSA-2003:223)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks.

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 databases at X-Force (11078), Tenable (12406), SecurityFocus (BID 6592†) and Vulnerability Center (SBV-29313†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.9
VulDB Meta Temp Score: 2.9

VulDB Base Score: 2.9
VulDB Temp Score: 2.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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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Nessus ID: 12406
Nessus Name: RHEL 2.1 : stunnel (RHSA-2003:223)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/12/2003 🔍
01/13/2003 +1 days 🔍
04/23/2003 +100 days 🔍
05/12/2003 +19 days 🔍
05/12/2003 +0 days 🔍
07/06/2004 +421 days 🔍
01/20/2011 +2389 days 🔍
08/11/2014 +1299 days 🔍
06/28/2021 +2513 days 🔍

Sourcesinfo

Advisory: redhat.com
Status: Not defined

CVE: CVE-2002-1563 (🔍)
GCVE (CVE): GCVE-0-2002-1563
GCVE (VulDB): GCVE-100-20411
X-Force: 11078
SecurityFocus: 6592 - Stunnel Unspecified SIGCHLD Signal Handler Vulnerability
Vulnerability Center: 29313 - Stunnel 4.0.3 and Earlier Remote Denial of Service Vulnerability, Medium

Entryinfo

Created: 08/11/2014 23:45
Updated: 06/28/2021 14:21
Changes: 08/11/2014 23:45 (53), 03/14/2017 08:03 (9), 06/28/2021 14:21 (3)
Complete: 🔍
Cache ID: 216:ADC:103

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

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