Apache HTTP Server shared memory scorecard overwrite
| apache-scorecard-memory-overwrite (10280) |  Low Risk |
Description:
Apache HTTP Server is vulnerable to a denial of service attack, caused by a vulnerability in the shared memory scorecard. A local attacker with privileges of the Apache UID could send a SIGUSR1 signal to any process as root to cause a denial of service against the system.
Consequences:
Denial of Service
Remedy:
Upgrade to the latest version of Apache HTTP Server (1.3.27 or later), available from the Apache Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- Apache HTTP Server Project Web site: Welcome! - The Apache HTTP Server Project.
- Apache Web site: Apache 1.3.27 Released.
- ApacheWeek, Issue 311, 4th October 2002: Security Reports.
- CIAC Information Bulletin N-005: Apache 1.3.27 HTTP Server Release.
- CIAC Information Bulletin N-005: Apache 1.3.27 HTTP Server Release [REVISED 7 July 2004].
- Conectiva Linux Announcement CLSA-2002:530: DoS and other vulnerabilities.
- Gentoo Linux Security Annoucement 2002-10-15 08:25 UTC: shared memory scoreboard vulnerabilities.
- iDEFENSE Security Advisory 10.03.2002 : Apache 1.3.x shared memory scoreboard vulnerabilities .
- Oracle Security Alert #45: Security Release of Apache 1.3.27.
- SCO Security Advisory CSSA-2002-056.0: Linux: apache vulnerabilities in shared memory, DNS, and ApacheBench.
- SCO Security Advisory CSSA-2003-SCO.10.1: OpenServer 5.0.5 OpenServer 5.0.6 : Various security fixes for Apach. (From LinuxSecurity archive)
- BID-5884: Apache Web Server Scoreboard Memory Segment Overwriting SIGUSR1 Sending Vulnerability
- 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.
- DSA-187: apache -- several vulnerabilities
- DSA-188: apache-ssl -- several vulnerabilities
- DSA-195: apache-perl -- several vulnerabilities
- MDKSA-2002:068: Updated apache packages fix multiple vulnerabilities
- MDKSA-2002:068-1: Updated apache packages fix multiple vulnerabilities
- MDKSA-2003:024: Updated packages fix multiple vulnerabilities
- OpenPKG-SA-2002.009: Apache
- RHSA-2002-222: Updated apache
- RHSA-2002-248: apache
- RHSA-2002-251: apache security update
- RHSA-2003-106: Updated apache and mod_ssl packages available
Platforms Affected:
- Apache HTTP Server 1.3.19
- Apache HTTP Server 1.3.20
- Apache HTTP Server 1.3.22
- Apache HTTP Server 1.3.23
- Apache HTTP Server 1.3.24
- Apache HTTP Server 1.3.25
- Apache HTTP Server 1.3.26
- RedHat Enterprise Linux 2.1 AS
- RedHat Linux Advanced Workstation 2.1 Itanium
- RedHat Stronghold
Reported:
Oct 03, 2002
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