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Scientific Linux Security Update : openssl on SL6.x, SL7.x i386/x86_64 (20141016) (POODLE)
low Nessus Plugin ID 78537
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Synopsis
The remote Scientific Linux host is missing one or more security updates.Description
This update adds support for the TLS Fallback Signaling Cipher Suite Value (TLS_FALLBACK_SCSV), which can be used to prevent protocol downgrade attacks against applications which re-connect using a lower SSL/TLS protocol version when the initial connection indicating the highest supported protocol version fails.This can prevent a forceful downgrade of the communication to SSL 3.0.
The SSL 3.0 protocol was found to be vulnerable to the padding oracle attack when using block cipher suites in cipher block chaining (CBC) mode. This issue is identified as CVE-2014-3566, and also known under the alias POODLE. This SSL 3.0 protocol flaw will not be addressed in a future update; it is recommended that users configure their applications to require at least TLS protocol version 1.0 for secure communication.
For additional information about this flaw, see Upstream's Knowledgebase article at https://access.redhat.com/articles/1232123
A memory leak flaw was found in the way OpenSSL parsed the DTLS Secure Real-time Transport Protocol (SRTP) extension data. A remote attacker could send multiple specially crafted handshake messages to exhaust all available memory of an SSL/TLS or DTLS server. (CVE-2014-3513)
A memory leak flaw was found in the way an OpenSSL handled failed session ticket integrity checks. A remote attacker could exhaust all available memory of an SSL/TLS or DTLS server by sending a large number of invalid session tickets to that server. (CVE-2014-3567)
CVE-2014-3566 issue and correct the CVE-2014-3513 and CVE-2014-3567 issues. For the update to take effect, all services linked to the OpenSSL library (such as httpd and other SSL-enabled services) must be restarted or the system rebooted.
Solution
Update the affected packages.See Also
Plugin Details
Severity: Low
ID: 78537
File Name: sl_20141016_openssl_on_SL6_x.nasl
Version: 1.21
Type: local
Agent: unix
Published: 10/17/2014
Updated: 6/28/2023
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.1
CVSS v2
Risk Factor: High
Base Score: 7.1
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C
CVSS v3
Risk Factor: Low
Base Score: 3.4
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
Vulnerability Information
CPE: p-cpe:/a:fermilab:scientific_linux:openssl-devel, x-cpe:/o:fermilab:scientific_linux, p-cpe:/a:fermilab:scientific_linux:openssl-static, p-cpe:/a:fermilab:scientific_linux:openssl-libs, p-cpe:/a:fermilab:scientific_linux:openssl-perl, p-cpe:/a:fermilab:scientific_linux:openssl-debuginfo, p-cpe:/a:fermilab:scientific_linux:openssl
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 10/16/2014
Vulnerability Publication Date: 10/15/2014