Ubuntu 6.06 LTS / 8.04 LTS / 9.04 / 9.10 / 10.04 LTS : apache2 vulnerability (USN-990-2)

Medium Nessus Plugin ID 49644


The remote Ubuntu host is missing one or more security-related patches.


USN-860-1 introduced a partial workaround to Apache that disabled client initiated TLS renegotiation in order to mitigate CVE-2009-3555.
USN-990-1 introduced the new RFC5746 renegotiation extension in openssl, and completely resolves the issue.

After updating openssl, an Apache server will allow both patched and unpatched web browsers to connect, but unpatched browsers will not be able to renegotiate. This update introduces the new SSLInsecureRenegotiation directive for Apache that may be used to re-enable insecure renegotiations with unpatched web browsers. For more information, please refer to:
http://httpd.apache.org/docs/2.2/mod/mod_ssl.html#sslinsecurerenegotia tion

Marsh Ray and Steve Dispensa discovered a flaw in the TLS and SSLv3 protocols. If an attacker could perform a man in the middle attack at the start of a TLS connection, the attacker could inject arbitrary content at the beginning of the user's session. This update adds backported support for the new RFC5746 renegotiation extension and will use it when both the client and the server support it.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected packages.

Plugin Details

Severity: Medium

ID: 49644

File Name: ubuntu_USN-990-2.nasl

Version: $Revision: 1.12 $

Type: local

Agent: unix

Published: 2010/09/22

Modified: 2016/05/27

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P

Temporal Vector: CVSS2#E:ND/RL:ND/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:apache2, p-cpe:/a:canonical:ubuntu_linux:apache2-common, p-cpe:/a:canonical:ubuntu_linux:apache2-doc, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-event, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-itk, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-perchild, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-prefork, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-worker, p-cpe:/a:canonical:ubuntu_linux:apache2-prefork-dev, p-cpe:/a:canonical:ubuntu_linux:apache2-src, p-cpe:/a:canonical:ubuntu_linux:apache2-suexec, p-cpe:/a:canonical:ubuntu_linux:apache2-suexec-custom, p-cpe:/a:canonical:ubuntu_linux:apache2-threaded-dev, p-cpe:/a:canonical:ubuntu_linux:apache2-utils, p-cpe:/a:canonical:ubuntu_linux:apache2.2-bin, p-cpe:/a:canonical:ubuntu_linux:apache2.2-common, p-cpe:/a:canonical:ubuntu_linux:libapr0, p-cpe:/a:canonical:ubuntu_linux:libapr0-dev, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:6.06:-:lts, cpe:/o:canonical:ubuntu_linux:8.04:-:lts, cpe:/o:canonical:ubuntu_linux:9.04, cpe:/o:canonical:ubuntu_linux:9.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2010/09/21

Reference Information

CVE: CVE-2009-3555

BID: 36935

OSVDB: 59969

USN: 990-2

CWE: 310