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Vulnerability Details : CVE-2002-0839

The shared memory scoreboard in the HTTP daemon for Apache 1.3.x before 1.3.27 allows any user running as the Apache UID to send a SIGUSR1 signal to any process as root, resulting in a denial of service (process kill) or possibly other behaviors that would not normally be allowed, by modifying the parent[].pid and parent[].last_rtime segments in the scoreboard.
Publish Date : 2002-10-11 Last Update Date : 2016-10-17
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access Admin
Vulnerability Type(s) Denial Of Service
CWE ID CWE id is not defined for this vulnerability

- Vendor Statements

Fixed in Apache HTTP Server 1.3.27:
Source: Apache

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important 2002-10-03
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- Related OVAL Definitions

Title Definition Id Class Family
Shared memory permissions lead to local privilege escalation oval:org.apache.httpd:def:20020839
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2002-0839

# Product Type Vendor Product Version Update Edition Language
1 Application Apache Http Server 1.3.19 Version Details Vulnerabilities
2 Application Apache Http Server 1.3.20 Version Details Vulnerabilities
3 Application Apache Http Server 1.3.22 Version Details Vulnerabilities
4 Application Apache Http Server 1.3.23 Version Details Vulnerabilities
5 Application Apache Http Server 1.3.24 Version Details Vulnerabilities
6 Application Apache Http Server 1.3.25 Version Details Vulnerabilities
7 Application Apache Http Server 1.3.26 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Apache Http Server 7

- References For CVE-2002-0839
BID 5884 Apache Web Server Scoreboard Memory Segment Overwriting SIGUSR1 Sending Vulnerability Release Date:2009-07-11
XF apache-scorecard-memory-overwrite(10280)
HP HPSBUX0210-224
BUGTRAQ 20021003 [OpenPKG-SA-2002.009] OpenPKG Security Advisory (apache)
VULNWATCH 20021003 iDEFENSE Security Advisory 10.03.2002: Apache 1.3.x shared memory scoreboard vulnerabilities
BUGTRAQ 20021017 TSLSA-2002-0069-apache
SGI 20021105-01-I
BUGTRAQ 20021015 GLSA: apache

- Metasploit Modules Related To CVE-2002-0839

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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