Apache HTTP Server mod_ssl denial of service
| apache-modssl-dos (17200) |  Medium Risk |
Description:
Apache HTTP Server is vulnerable to a denial of service attack, caused by a vulnerability in the mod_ssl authentication module. By forcing an SSL connection to abort while in a particular state, a remote attacker could cause the ssl_io_input_getline function to enter into an infinite loop.
Consequences:
Denial of Service
Remedy:
For Red Hat Linux:
Upgrade to the latest mod_ssl, httpd-devel or httpd package, as listed below. Refer to RHSA-2004:349-10 for more information. See References.
Red Hat Desktop, Red Hat Enterprise Linux AS, ES and WS: 2.0.46-38 or later
For SuSE Linux:
Upgrade to the latest mod_ssl package, as listed below. Refer to SuSE Security Announcement SuSE-SA:2004:010 for more information. See References.
SuSE Linux 9.1: 2.0.49-27.11 or later
SuSE Linux 9.0: 2.0.48-135 or later
SuSE Linux 8.2: 2.0.48-135 or later
SuSE Linux 8.1: 2.0.48-135 or later
For Mandrake Linux:
Upgrade to the latest apache2 package, as listed below. Refer to MandrakeSoft Security Advisory MDKSA-2004:096 : apache2 for more information. See References.
Mandrake Linux 9.2: 2.0.47-6.9.92mdk or later
Mandrake Linux 10.0: 2.0.48-6.6.100mdk or later
For Trustix Secure Linux:
Upgrade to the latest apache package, as listed below. Refer to Trustix Secure Linux Security Advisory #2004-0047 for more information. See References.
Trustix Secure Linux 2.0: 2.0.51-0.1tr or later
Trustix Secure Linux 2.1 and Enterprise Server 2: 2.0.51-1tr or later
For Gentoo Linux:
Upgrade to the latest version of apache (2.0.51, < 2.0 or later) or mod_dav (1.0.3-r2 or later), as listed in GLSA 200409-21. See References.
For Conectiva Linux:
Upgrade to the latest apache package, as listed below. Refer to Conectiva Linux Security Announcement CLSA-2004:868 for more information. See References.
Conectiva Linux 10: 2.0.49-61251U10_1cl or later
Conectiva Linux 9: 2.0.45-28790U90_8cl or later
For HP 11.00, 11.11, 11.22, and 11.23:
Apply the appropriate patch for your system, as listed in Hewlett-Packard Company Security Bulletin HPSBUX01090 for more information. See References.
For Mac OS:
Apply Security Update 2004-12-02, as listed in AppleCare Knowledge Base Document 61798. See References.
For TurboLinux:
Upgrade to the latest httpd package (2.0.51-8 or later), as listed in Turbolinux Security Advisory TLSA-2005-2. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- Apache Bug Database Bugzilla Bug 29964: non-terminating i/o.
- AppleCare Knowledge Base Document 61798: Security Update 2004-12-02.
- CIAC Information Bulletin P-049: Apple Security Update 2004-12-02.
- Conectiva Linux Security Announcement CLSA-2004:868: Several vulnerabilities in apache, mod_ssl and mod_dav.
- IBM Systems Support Web site: Support for HMC.
- Trustix Secure Linux Security Advisory #2004-0047: Several security holes.
- BID-11094: Apache mod_ssl Denial Of Service Vulnerability
- CVE-2004-0748: mod_ssl in Apache 2.0.50 and earlier allows remote attackers to cause a denial of service (CPU consumption) by aborting an SSL connection in a way that causes an Apache child process to enter an infinite loop.
- GLSA-200409-21: Apache 2, mod_dav: Multiple vulnerabilities
- MDKSA-2004:096: Updated apache2 packages fix multiple vulnerabilities
- RHSA-2004-349: httpd security update
- SUSE-SA:2004:030: apache2: remote DoS condition
Platforms Affected:
- Apache HTTP Server 2.0
- Apache HTTP Server 2.0.28
- Apache HTTP Server 2.0.32
- Apache HTTP Server 2.0.35
- Apache HTTP Server 2.0.36
- Apache HTTP Server 2.0.37
- Apache HTTP Server 2.0.38
- Apache HTTP Server 2.0.39
- Apache HTTP Server 2.0.40
- Apache HTTP Server 2.0.41
- Apache HTTP Server 2.0.42
- Apache HTTP Server 2.0.43
- Apache HTTP Server 2.0.44
- Apache HTTP Server 2.0.45
- Apache HTTP Server 2.0.46
- Apache HTTP Server 2.0.47
- Apache HTTP Server 2.0.48
- Apache HTTP Server 2.0.49
- Apache HTTP Server 2.0.50
- Apple Mac OS X Server 10.2.8
- Apple Mac OS X Server 10.3.6
- Conectiva Linux 10
- Conectiva Linux 9.0
- Gentoo Linux
- HP HP-UX 11.00
- HP HP-UX 11.11
- HP HP-UX 11.22
- HP HP-UX 11.23
- MandrakeSoft Mandrake Linux 10.0
- MandrakeSoft Mandrake Linux 10.0 AMD64
- MandrakeSoft Mandrake Linux 9.2
- MandrakeSoft Mandrake Linux 9.2 AMD64
- RedHat Enterprise Linux 3 WS
- RedHat Enterprise Linux 3 ES
- RedHat Enterprise Linux 3 Desktop
- RedHat Enterprise Linux 3 AS
- SuSE Linux Enterprise Server 9
- SUSE SuSE Linux 8.1
- SUSE SuSE Linux 8.2
- SUSE SuSE Linux 9.0
- SUSE SuSE Linux 9.1
- SuSE SuSE SLES 9
- Trustix Enterprise Server 2
- Trustix Secure Linux 2.0
- Trustix Secure Linux 2.1
- Turbolinux Turbolinux 10 Desktop
- Turbolinux Turbolinux 10 F...
- Turbolinux Turbolinux 10 Server
- Turbolinux Turbolinux Home
Reported:
Sep 01, 2004
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