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The remote Oracle Linux host is missing one or more security updates.
From Red Hat Security Advisory 2010:0166 :
Updated gnutls packages that fix two security issues are now available
for Red Hat Enterprise Linux 5.
The Red Hat Security Response Team has rated this update as having
moderate security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.
The GnuTLS library provides support for cryptographic algorithms and
for protocols such as Transport Layer Security (TLS).
A flaw was found in the way the TLS/SSL (Transport Layer
Security/Secure Sockets Layer) protocols handled 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 addresses this flaw by implementing the TLS
Renegotiation Indication Extension, as defined in RFC 5746.
Refer to the following Knowledgebase article for additional details
about the CVE-2009-3555 flaw:
Dan Kaminsky found that browsers could accept certificates with MD2
hash signatures, even though MD2 is no longer considered a
cryptographically strong algorithm. This could make it easier for an
attacker to create a malicious certificate that would be treated as
trusted by a browser. GnuTLS now disables the use of the MD2 algorithm
inside signatures by default. (CVE-2009-2409)
Users of GnuTLS are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. For the
update to take effect, all applications linked to the GnuTLS library
must be restarted, or the system rebooted.
See also :
Update the affected gnutls packages.
Risk factor :
Medium / CVSS Base Score : 5.8
Family: Oracle Linux Local Security Checks
Nessus Plugin ID: 68020 ()
CVE ID: CVE-2009-2409CVE-2009-3555
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