Summary
Ubuntu Update for Linux kernel vulnerabilities USN-990-1
Solution
Please Install the Updated Packages.
Insight
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.
ATTENTION: After applying this update, a patched server will allow both patched and unpatched clients to connect, but unpatched clients will not be able to renegotiate. For more information, please refer to the following:
http://www.openssl.org/docs/ssl/SSL_CTX_set_options.html http://www.openssl.org/docs/ssl/SSL_CTX_set_options.html
Affected
openssl vulnerability on Ubuntu 6.06 LTS ,
Ubuntu 8.04 LTS ,
Ubuntu 9.04 ,
Ubuntu 9.10 ,
Ubuntu 10.04 LTS
Severity
Classification
-
CVE CVE-2009-3555 -
CVSS Base Score: 5.8
AV:N/AC:M/Au:N/C:N/I:P/A:P
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