Ispravljena su dva propusta u radu Kerberos protokola za operacijski sustav HP-UX. Riječ je o protokolu za autentikaciju korisnika na računalnoj mreži. Propusti su rezultat neodgovarajućeg prihvaćanja rezultata otkrivanja pogrešaka tj. kontrolnih suma. Udaljeni napadači mogu iskoristiti propuste za krivotvorenje GSS tokena, stjecanje povećanih ovlasti, promjenu KDC (eng. Key Distribution Center) odgovora ili krivotvorenje KRB-SAFE poruka. Svim se korisnicima preporuča nadogradnja na poboljšane inačice paketa.

SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: c02657328

Version: 1
HPSBUX02623 SSRT100355 rev.1 - HP-UX Running Kerberos, Remote Unauthorized Modification
NOTICE: The information in this Security Bulletin should be acted upon as soon as possible.

Release Date: 2011-01-19

Last Updated: 2011-01-19

Potential Security Impact: Remote unauthorized modification

Source: Hewlett-Packard Company, HP Software Security Response Team
VULNERABILITY SUMMARY

Potential security vulnerabilities have been identified on HP-UX running Kerberos. These vulnerabilities could be exploited remotely by an unauthorized user to modify data, prompts, or responses.

References: CVE-2010-1323, CVE-2010-1324
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.

HP-UX B.11.11 running the Kerberos Client software versions prior to v1.3.5.11.
HP-UX B.11.23 and B.11.31 running the Kerberos Client software versions prior to v1.6.2.09.
BACKGROUND

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CVSS 2.0 Base Metrics

Reference
	
Base Vector
	
Base Score
CVE-2010-1323
	
(AV:A/AC:H/Au:N/C:N/I:P/A:N)
	
2.6
CVE-2010-1324
	
(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 web updates and patch to resolve the vulnerabilities.

The web updates and patch are available by contacting HP Support.

For Kerberos Web Update (KRB5CLIENT)
HP-UX Release
	
Depot name
B.11.11 (11i v1)
	
KRB5CLIENT_C.1.3.5.11_HP-UX_B.11.11_32_64.depot or subsequent
B.11.23 (11i v2)
	
KRB5CLIENT_D.1.6.2.09_HP-UX_B.11.23_IA_PA.depot or subsequent
B.11.31 (11i v3)
	
KRB5CLIENT_E.1.6.2.09_HP-UX_B.11.31_IA_PA.depot or subsequent

For Kerberos Client Product in Core-OS (KRB5-Client)
HP-UX Release
	
Patch ID
B.11.31 (11i v3)
	
PHSS_41775 or subsequent


NOTE: HP-UX B.11.11 and B.11.23 Kerberos Client patches are based on MIT Kerberos version 1.0. That version is not impacted by these security vulnerabilities.

MANUAL ACTIONS: Yes - NonUpdate
Upgrade to the versions listed under Resolution.

PRODUCT SPECIFIC INFORMATION

HP-UX Software Assistant: HP-UX Software Assistant is an enhanced application that replaces HP-UX Security Patch Check. It analyzes all Security Bulletins issued by HP and lists recommended actions that may apply to a specific HP-UX system. It can also download patches and create a depot automatically. For more information see: https://www.hp.com/go/swa

The following text is for use by the HP-UX Software Assistant.

AFFECTED VERSIONS

HP-UX B.11.11
==================
krb5client.KRB5-64SLIB-A
krb5client.KRB5-PRG-A
krb5client.KRB5-RUN-A
krb5client.KRB5-SHLIB-A
action: install revision C.1.3.5.11 or subsequent

HP-UX B.11.23
==================
krb5client.KRB5-64SLIB-A
krb5client.KRB5-PRG-A
krb5client.KRB5-RUN-A
krb5client.KRB5-SHLIB-A
krb5client.KRB5IA32SLIB-A
krb5client.KRB5IA64SLIB-A
action: install revision D.1.6.2.09 or subsequent

HP-UX B.11.31
==================
krb5client.KRB5-64SLIB-A
krb5client.KRB5-PRG-A
krb5client.KRB5-RUN-A
krb5client.KRB5-SHLIB-A
krb5client.KRB5IA32SLIB-A
krb5client.KRB5IA64SLIB-A
action: install revision E.1.6.2.09 or subsequent

HP-UX B.11.31
==================
KRB5-Client.KRB5-PRG
KRB5-Client.KRB5-64SLIB
KRB5-Client.KRB5-IA32SLIB
KRB5-Client.KRB5-IA64SLIB
KRB5-Client.KRB5-RUN
KRB5-Client.KRB5-SHLIB
action: install PHSS_41775 or subsequent

END AFFECTED VERSIONS

HISTORY
Version:1 (rev.1) 19 January 2011 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.

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