Security Bulletin: Vulnerabilities in GnuTLS affect Power Hardware Management Console

Summary

GnuTLS is used by Power Hardware Management Console (HMC). HMC has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2017-7869**
DESCRIPTION:** GnuTLS is vulnerable to a denial of service, caused by an integer overflow and heap-based buffer overflow in cdk_pkt_read function in opencdk/read-packet.c. An attacker could exploit this vulnerability to cause the application to crash.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/124668 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2017-7507**
DESCRIPTION:** GnuTLS is vulnerable to a denial of service, caused by a NULL pointer dereference while decoding a status response TLS extension with valid contents. A remote attacker could exploit this vulnerability to cause the application to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/128676 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2017-5337**
DESCRIPTION:** GnuTLS could allow a remote attacker to execute arbitrary code on the system, caused by a stack or heap-based buffer overflow error. By sending a specially-crafted OpenPGP certificate, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120490 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2017-5336**
DESCRIPTION:** GnuTLS could allow a remote attacker to execute arbitrary code on the system, caused by a stack or heap-based buffer overflow error. By sending a specially-crafted OpenPGP certificate, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120489 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2017-5335**
DESCRIPTION:** GnuTLS could allow a remote attacker to execute arbitrary code on the system, caused by a stack or heap-based buffer overflow error. By sending a specially-crafted OpenPGP certificate, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120488 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2017-5334**
DESCRIPTION:** GnuTLS could allow a remote attacker to execute arbitrary code on the system, caused by a double-free memory error in gnutls_x509_ext_import_proxy() function. By sending a specially-crafted X.509 containing a Proxy Certificate Information extension, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120486 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2016-7444**
DESCRIPTION:** GnuTLS could allow a remote attacker to bypass security restrictions, caused by the failure to verify the serial length of an OCSP response by the gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c. An attacker could exploit this vulnerability using vectors involving trailing bytes left by gnutls_malloc to bypass the certificate validation mechanism.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117393 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

Power HMC V8.8.6.0
Power HMC V8.8.7.0

Remediation/Fixes

The following fixes are available on IBM Fix Central at: <http://www-933.ibm.com/support/fixcentral/&gt;

Product

|

VRMF

|

APAR

|

Remediation/Fix

—|—|—|—

Power HMC

|

V8.8.6.0 SP2

|

MB04106

|

MH01722

Power HMC

|

V8.8.7.0 x86

|

MB04110

|

MH01723

Power HMC

|

V8.8.7.0 ppc

|

MB04112

|

MH01724

Workarounds and Mitigations

None