low
2.6
CWE
476
Advisory Published
CVE Published
Updated

CVE-2009-3094: Null Pointer Dereference

First published: Wed Sep 02 2009(Updated: )

A NULL pointer dereference flaw was discovered in httpd's mod_proxy_ftp module. Malicious FTP server can use this flaw to crash httpd's child process via malformed reply to EPSV FTP command. Problem was confirmed in both 2.0.x and 2.2.x httpd versions. References: <a href="http://www.intevydis.com/blog/?p=59">http://www.intevydis.com/blog/?p=59</a> <a href="http://secunia.com/advisories/36549/">http://secunia.com/advisories/36549/</a>

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/httpd22<0:2.2.10-25.1.ep5.el4
0:2.2.10-25.1.ep5.el4
redhat/pcsc-lite<0:1.3.3-3.el4
0:1.3.3-3.el4
redhat/rhpki-ca<0:7.3.0-20.el4
0:7.3.0-20.el4
redhat/rhpki-java-tools<0:7.3.0-10.el4
0:7.3.0-10.el4
redhat/rhpki-kra<0:7.3.0-14.el4
0:7.3.0-14.el4
redhat/rhpki-manage<0:7.3.0-19.el4
0:7.3.0-19.el4
redhat/rhpki-native-tools<0:7.3.0-6.el4
0:7.3.0-6.el4
redhat/rhpki-ocsp<0:7.3.0-13.el4
0:7.3.0-13.el4
redhat/rhpki-tks<0:7.3.0-13.el4
0:7.3.0-13.el4
redhat/httpd<0:2.2.3-31.el5_4.2
0:2.2.3-31.el5_4.2
redhat/httpd<0:2.2.10-11.ep5.el5
0:2.2.10-11.ep5.el5
Apache Http Server>=2.0.35<2.0.64
Apache Http Server>=2.2.0<2.2.14
Fedora=10
Fedora=12
Debian=4.0
Debian=5.0
Apache HTTP Server>=2.0.35<2.0.64
Apache HTTP Server>=2.2.0<2.2.14

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2009-3094?

    CVE-2009-3094 is classified as a critical vulnerability due to its potential to crash the httpd child process.

  • How do I fix CVE-2009-3094?

    To fix CVE-2009-3094, update the httpd package to version 2.2.10-25.1.ep5.el4 or a later version.

  • What software is affected by CVE-2009-3094?

    CVE-2009-3094 affects the Apache HTTP Server versions 2.0.x and 2.2.x.

  • What is the exploit method for CVE-2009-3094?

    CVE-2009-3094 can be exploited by a malicious FTP server sending a malformed reply to the EPSV FTP command.

  • Which systems are vulnerable to CVE-2009-3094?

    Systems running vulnerable versions of the httpd package, particularly in Red Hat environments, are susceptible to CVE-2009-3094.

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