Home / vulnerabilities HP Security Bulletin HPSBUX03363 1
Posted on 09 July 2015
Source : packetstormsecurity.org Link
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SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c04725401
Version: 1
HPSBUX03363 rev.1 - HP-UX Apache Web Server running OpenSSL, Remote
Disclosure of Information
NOTICE: The information in this Security Bulletin should be acted upon as
soon as possible.
Release Date: 2015-07-08
Last Updated: 2015-07-08
Potential Security Impact: Remote disclosure of information
Source: Hewlett-Packard Company, HP Software Security Response Team
VULNERABILITY SUMMARY
A potential security vulnerability has been identified with OpenSSL which may
impact HP-UX Apache Web Server with SSL/TLS enabled.
This is the TLS vulnerability using US export-grade 512-bit keys in
Diffie-Hellman key exchange known as "Logjam" which could be exploited
remotely resulting in disclosure of information.
Note: The default configuration of HP-UX Apache Web Server is not vulnerable.
References:
CVE-2015-4000 (SSRT102106)
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX Apache Web Server - all versions if both EDH and EXPORT ciphers are
enabled.
BACKGROUND
CVSS 2.0 Base Metrics
===========================================================
Reference Base Vector Base Score
CVE-2015-4000 (AV:N/AC:M/Au:N/C:N/I:P/A:N) 4.3
===========================================================
Information on CVSS is documented
in HP Customer Notice: HPSN-2008-002
RESOLUTION
HP has provided the following workaround to resolve the vulnerability in
HP-UX Apache Web Server.
Note: The HP-UX Apache Web Server with default configuration is not
vulnerable because the default configuration does not support the DH ciphers.
Since the HP-UX Apache Web Server might be vulnerable if both EDH and
EXPORT ciphers have been enabled, run the following commands to check:
# openssl s_client -connect <server_name>:443 -cipher "EDH"
# openssl s_client -connect <server_name>:443 -cipher "EXP"
If both connections succeed, then the following workaround should be
applied.
Workaround:
Change the following Apache configuration settings to disable the
vulnerable DH and EXPORT ciphers:
Example from the default configuration file:
1. Edit the Apache SSL configuration file: "httpd-ssl.conf".
2. Change "+EXP" to "!EXP" or append ":!EXP" if not in the list:
SSLCipherSuite
!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:!EXP:+eNULL
3. Restart the Apache Web Server.
HISTORY
Version:1 (rev.1) - 8 July 2015 Initial release
Third Party Security Patches: Third party security patches that are to be
installed on systems running HP software products should be applied in
accordance with the customer's patch management policy.
Support: For issues about implementing the recommendations of this Security
Bulletin, contact normal HP Services support channel. For other issues about
the content of this Security Bulletin, send e-mail to security-alert@hp.com.
Report: To report a potential security vulnerability with any HP supported
product, send Email to: security-alert@hp.com
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Software Product Category: The Software Product Category is represented in
the title by the two characters following HPSB.
3C = 3COM
3P = 3rd Party Software
GN = HP General Software
HF = HP Hardware and Firmware
MP = MPE/iX
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PI = Printing and Imaging
PV = ProCurve
ST = Storage Software
TU = Tru64 UNIX
UX = HP-UX
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