According to its banner, the version of Apache 2.2.x running on the remote host is prior to 2.2.14. It is, therefore, potentially affected by multiple vulnerabilities :

  - Faulty error handling in the Solaris pollset support     could lead to a denial of service. (CVE-2009-2699)

  - The 'mod_proxy_ftp' module allows remote attackers to     bypass intended access restrictions. (CVE-2009-3095)

  - The 'ap_proxy_ftp_handler' function in     'modules/proxy/proxy_ftp.c' in the 'mod_proxy_ftp'     module allows remote FTP servers to cause a     denial of service. (CVE-2009-3094)

Note that the remote web server may not actually be affected by these vulnerabilities as Nessus did not try to determine whether the affected modules are in use or check for the issues themselves.

CVE-2009-1891 httpd: possible temporary DoS (CPU consumption) in mod_deflate

CVE-2009-3094 httpd: NULL pointer defer in mod_proxy_ftp caused by crafted EPSV and PASV reply

CVE-2009-3095 httpd: mod_proxy_ftp FTP command injection via Authorization HTTP header

CVE-2009-3555 TLS: MITM attacks via session renegotiation

A flaw was found in the way the TLS/SSL (Transport Layer Security/Secure Sockets Layer) protocols handle session renegotiation.
A man-in-the-middle attacker could use this flaw to prefix arbitrary plain text to a client's session (for example, an HTTPS connection to a website). This could force the server to process an attacker's request as if authenticated using the victim's credentials. This update partially mitigates this flaw for SSL sessions to HTTP servers using mod_ssl by rejecting client-requested renegotiation.
(CVE-2009-3555)

Note: This update does not fully resolve the issue for HTTPS servers.
An attack is still possible in configurations that require a server-initiated renegotiation. Refer to the following Knowledgebase article for further information:
http://kbase.redhat.com/faq/docs/DOC-20491

A denial of service flaw was found in the Apache mod_deflate module.
This module continued to compress large files until compression was complete, even if the network connection that requested the content was closed before compression completed. This would cause mod_deflate to consume large amounts of CPU if mod_deflate was enabled for a large file. (CVE-2009-1891) - SL4 only

A NULL pointer dereference flaw was found in the Apache mod_proxy_ftp module. A malicious FTP server to which requests are being proxied could use this flaw to crash an httpd child process via a malformed reply to the EPSV or PASV commands, resulting in a limited denial of service. (CVE-2009-3094)

A second flaw was found in the Apache mod_proxy_ftp module. In a reverse proxy configuration, a remote attacker could use this flaw to bypass intended access restrictions by creating a carefully-crafted HTTP Authorization header, allowing the attacker to send arbitrary commands to the FTP server. (CVE-2009-3095)

After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

From Red Hat Security Advisory 2009:1579 :

Updated httpd packages that fix multiple security issues are now available for Red Hat Enterprise Linux 3 and 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The Apache HTTP Server is a popular Web server.

A flaw was found in the way the TLS/SSL (Transport Layer Security/Secure Sockets Layer) protocols handle session renegotiation.
A man-in-the-middle attacker could use this flaw to prefix arbitrary plain text to a client's session (for example, an HTTPS connection to a website). This could force the server to process an attacker's request as if authenticated using the victim's credentials. This update partially mitigates this flaw for SSL sessions to HTTP servers using mod_ssl by rejecting client-requested renegotiation.
(CVE-2009-3555)

Note: This update does not fully resolve the issue for HTTPS servers.
An attack is still possible in configurations that require a server-initiated renegotiation. Refer to the following Knowledgebase article for further information:
http://kbase.redhat.com/faq/docs/DOC-20491

A NULL pointer dereference flaw was found in the Apache mod_proxy_ftp module. A malicious FTP server to which requests are being proxied could use this flaw to crash an httpd child process via a malformed reply to the EPSV or PASV commands, resulting in a limited denial of service. (CVE-2009-3094)

A second flaw was found in the Apache mod_proxy_ftp module. In a reverse proxy configuration, a remote attacker could use this flaw to bypass intended access restrictions by creating a carefully-crafted HTTP Authorization header, allowing the attacker to send arbitrary commands to the FTP server. (CVE-2009-3095)

All httpd users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

A design flaw has been found in the TLS and SSL protocol that allows an attacker to inject arbitrary content at the beginning of a TLS/SSL connection. The attack is related to the way how TLS and SSL handle session renegotiations. CVE-2009-3555 has been assigned to this vulnerability.

As a partial mitigation against this attack, this apache2 update disables client-initiated renegotiations. This should fix the vulnerability for the majority of Apache configurations in use.

NOTE: This is not a complete fix for the problem. The attack is still possible in configurations where the server initiates the renegotiation. This is the case for the following configurations (the information in the changelog of the updated packages is slightly inaccurate) :

  - The 'SSLVerifyClient' directive is used in a Directory     or Location context.
  - The 'SSLCipherSuite' directive is used in a Directory or     Location context.

As a workaround, you may rearrange your configuration in a way that SSLVerifyClient and SSLCipherSuite are only used on the server or virtual host level.


A complete fix for the problem will require a protocol change. Further information will be included in a separate announcement about this issue.

In addition, this update fixes the following issues in Apache's mod_proxy_ftp :

  - CVE-2009-3094     Insufficient input validation in the mod_proxy_ftp     module allowed remote FTP servers to cause a denial of     service (NULL pointer dereference and child process     crash) via a malformed reply to an EPSV command.

  - CVE-2009-3095     Insufficient input validation in the mod_proxy_ftp     module allowed remote authenticated attackers to bypass     intended access restrictions and send arbitrary FTP     commands to an FTP server.

According to its banner, the version of Apache 2.2 installed on the remote host is older than 2.2.14.  Such versions are potentially affected by multiple vulnerabilities : 

  - Faulty error handling in the Solaris pollset support (Event Port backend) which could trigger hangs in the prefork and event MPMs on that platform (CVE-2009-2699)

  - The 'ap_proxy_ftp_handler' function in 'modules/proxy/proxy_ftp.c in the 'mod_proxy_ftp' module allows remote FTP servers to cause a denial-of-service via a malformed reply to an EPSV command. (CVE-2009-3094)

  - The 'mod_proxy_ftp' module allows remote attackers to bypass intended access restrictions and send arbitrary commands to an FTP server. (CVE-2009-3095)

NNM cannot determine whether the affected module is in use.

According to its banner, the version of Apache 2.2 installed on the remote host is older than 2.2.14.  Such versions are potentially affected by multiple vulnerabilities : 

  - Faulty error handling in the Solaris pollset support (Event Port backend) which could trigger hangs in the prefork and event MPMs on that platform (CVE-2009-2699)

  - The 'ap_proxy_ftp_handler' function in 'modules/proxy/proxy_ftp.c in the 'mod_proxy_ftp' module allows remote FTP servers to cause a denial-of-service via a malformed reply to an EPSV command. (CVE-2009-3094)

  - The 'mod_proxy_ftp' module allows remote attackers to bypass intended access restrictions and send arbitrary commands to an FTP server. (CVE-2009-3095)

ID	名前	製品	ファミリー	公開日	更新日	深刻度
42052	Apache 2.2.x < 2.2.14 Multiple Vulnerabilities	Nessus	Web Servers	2009/10/7	2018/11/15	high
60695	Scientific Linux Security Update : httpd on SL3.x, SL4.x, SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	high
67958	Oracle Linux 3 / 5 : httpd (ELSA-2009-1579)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2021/1/14	high
44799	Debian DSA-1934-1 : apache2 - multiple issues	Nessus	Debian Local Security Checks	2010/2/24	2021/1/4	high
5196	Apache < 2.2.14 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	2009/10/6	2019/3/6	medium
800574	Apache < 2.2.14 Multiple Vulnerabilities	Log Correlation Engine	Web Servers	2009/10/6		high

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