Ubuntu 6.06 LTS / 8.04 LTS / 9.04 / 9.10 / 10.04 LTS : openssl vulnerability (USN-990-1)

medium Nessus Plugin ID 49643

Language:

New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

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#SECURE_RENEGO TIATION.

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.

Solution

Update the affected packages.

See Also

https://usn.ubuntu.com/990-1/

Plugin Details

Severity: Medium

ID: 49643

File Name: ubuntu_USN-990-1.nasl

Version: 1.16

Type: local

Agent: unix

Published: 9/22/2010

Updated: 9/19/2019

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

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

Temporal Vector: E:POC/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libssl-dev, p-cpe:/a:canonical:ubuntu_linux:libssl0.9.8, p-cpe:/a:canonical:ubuntu_linux:libssl0.9.8-dbg, p-cpe:/a:canonical:ubuntu_linux:openssl, p-cpe:/a:canonical:ubuntu_linux:openssl-doc, 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: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/21/2010

Vulnerability Publication Date: 11/9/2009

Reference Information

CVE: CVE-2009-3555

BID: 36935

USN: 990-1

CWE: 310