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redhatRedHatRHSA-2010:0979
HistoryDec 13, 2010 - 12:00 a.m.

(RHSA-2010:0979) Moderate: openssl security update

2010-12-1300:00:00
access.redhat.com
14

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.023 Low

EPSS

Percentile

88.4%

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3)
and Transport Layer Security (TLS v1) protocols, as well as a
full-strength, general purpose cryptography library.

A ciphersuite downgrade flaw was found in the OpenSSL SSL/TLS server code.
A remote attacker could possibly use this flaw to change the ciphersuite
associated with a cached session stored on the server, if the server
enabled the SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option, possibly
forcing the client to use a weaker ciphersuite after resuming the session.
(CVE-2010-4180)

Note: With this update, setting the SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG
option has no effect and this bug workaround can no longer be enabled.

All OpenSSL users should upgrade to these updated packages, which contain a
backported patch to resolve this issue. For the update to take effect, all
services linked to the OpenSSL library must be restarted, or the system
rebooted.

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.023 Low

EPSS

Percentile

88.4%

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