Apache 2 before 2.0.47, and certain versions of mod_ssl for Apache 1.3, do not properly handle "certain sequences of per-directory renegotiations and the SSLCipherSuite directive being used to upgrade from a weak ciphersuite to a strong one," which could cause Apache to use the weak ciphersuite.

The remote host appears to be running a version of Apache 2.x prior to 2.0.47. It is, therefore, affected by multiple vulnerabilities :

  - An issue in may occur when the SSLCipherSuite directive     is used to upgrade a cipher suite which could lead to a     weaker cipher suite being used instead of the upgraded     one. (CVE-2003-0192)

  - A denial of service vulnerability may exist in the FTP     proxy component relating to the use of IPV6 addresses.
    (CVE-2003-0253)

  - An attacker may be able to craft a type-map file that     could cause the server to enter an infinite loop.
    (CVE-2003-0254)

Several vulnerabilities were discovered in Apache 2.x versions prior to 2.0.47. From the Apache 2.0.47 release notes :

Certain sequences of per-directory renegotiations and the SSLCipherSuite directive being used to upgrade from a weak ciphersuite to a strong one could result in the weak ciphersuite being used in place of the new one (CVE-2003-0192).

Certain errors returned by accept() on rarely accessed ports could cause temporary Denial of Service due to a bug in the prefork MPM (CVE-2003-0253).

Denial of Service was caused when target host is IPv6 but FTP proxy server can't create IPv6 socket (CVE-2003-0254).

The server would crash when going into an infinite loop due to too many subsequent internal redirects and nested subrequests (VU#379828).

The Apache Software Foundation thanks Saheed Akhtar and Yoshioka Tsuneo for responsibly reporting these issues.

To upgrade these apache packages, first stop Apache by issuing, as root :

service httpd stop

After the upgrade, restart Apache with :

service httpd start

Update :

The previously released packages had a manpage conflict between apache2-common and apache-1.3 that prevented both packages from being installed at the same time. This update provides a fixed apache2-common package.

Updated Apache and mod_ssl packages that fix several minor security issues are now available for Red Hat Enterprise Linux.

The Apache HTTP server is a powerful, full-featured, efficient, and freely-available Web server.

Ben Laurie found a bug in the optional renegotiation code in mod_ssl which can cause cipher suite restrictions to be ignored. This is triggered if optional renegotiation is used (SSLOptions +OptRenegotiate) along with verification of client certificates and a change to the cipher suite over the renegotiation. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2003-0192 to this issue.

Apache does not filter terminal escape sequences from its error logs, which could make it easier for attackers to insert those sequences into terminal emulators containing vulnerabilities related to escape sequences. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2003-0020 to this issue.

It is possible to get Apache 1.3 to get into an infinite loop handling internal redirects and nested subrequests. A patch for this issue adds a new LimitInternalRecursion directive.

All users of the Apache HTTP Web Server are advised to upgrade to the applicable errata packages, which contain back-ported fixes correcting these issues.

After the errata packages are installed, restart the Web service by running the following command :

/sbin/service httpd restart

ID	Name	Product	Family	Severity
11788	Apache 2.0.x < 2.0.47 Multiple Vulnerabilities (DoS, Encryption)	Nessus	Web Servers	medium
14058	Mandrake Linux Security Advisory : apache2 (MDKSA-2003:075-1)	Nessus	Mandriva Local Security Checks	medium
12412	RHEL 2.1 : apache (RHSA-2003:244)	Nessus	Red Hat Local Security Checks	medium

Detections

Analytics

CVE-2003-0192

critical

Tenable Plugins

medium

medium

medium