National Vulnerability Database

National Vulnerability Database

National Vulnerability

CVE-2002-0839 Detail


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.

Source:  MITRE      Last Modified:  10/11/2002

Quick Info

CVE Dictionary Entry:
Original release date:
Last revised:


CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.2 HIGH
(AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore:
Exploitability Subscore:
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Not required to exploit
Impact Type:
Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Apache (07/02/2008)

Fixed in Apache HTTP Server 1.3.27:

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name External Source SGI 20021105-01-I External Source BUGTRAQ 20021015 GLSA: apache External Source BUGTRAQ 20021017 TSLSA-2002-0069-apache Patch; Vendor Advisory External Source VULNWATCH 20021003 iDEFENSE Security Advisory 10.03.2002: Apache 1.3.x shared memory scoreboard vulnerabilities External Source CONECTIVA CLA-2002:530 External Source CONFIRM External Source BUGTRAQ 20021003 [OpenPKG-SA-2002.009] OpenPKG Security Advisory (apache) External Source HP HPSBOV02683 External Source HP HPSBUX0210-224 Vendor Advisory External Source CONFIRM External Source DEBIAN DSA-187 External Source DEBIAN DSA-188 External Source DEBIAN DSA-195 Vendor Advisory External Source XF apache-scorecard-memory-overwrite(10280) External Source MANDRAKE MDKSA-2002:068 External Source ENGARDE ESA-20021007-024 External Source BID 5884

Technical Details

Vulnerability Type (View All)

Change History 3 change records found - show changes