Security Bulletin: Vulnerabilities in ntp, libxml2, openssh, sqlite and python-base affect IBM BladeCenter Advanced Management Module (AMM)

Summary

IBM BladeCenter Advanced Management Module (AMM) has addressed the following vulnerabilities.

Vulnerability Details

Summary

IBM BladeCenter Advanced Management Module (AMM) has addressed the following vulnerabilities.

Vulnerability Details:

CVEID: CVE-2016-4953

Description: NTP is vulnerable to a denial of service, caused by the improper handling of packets. By sending specially crafted CRYPTO_NAK packets to an ephemeral peer target prior to a response being sent, a remote attacker could exploit this vulnerability to demobilize the ephemeral association.

CVSS Base Score: 3.7
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/113696&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-4954

Description: NTP is vulnerable to a denial of service, caused by the improper handling of packets. By sending spoofed server packets with correct origin timestamps, a remote attacker could exploit this vulnerability to cause a false leap indication to be set.

CVSS Base Score: 3.7
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/113697&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-4955

Description: NTP is vulnerable to a denial of service, caused by the improper handling of packets. By sending spoofed CRYPTO_NAK or a bad MAC packets with correct origin timestamps, a remote attacker could exploit this vulnerability to cause the autokey association to reset.

CVSS Base Score: 3.7
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/113698&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-4956

Description: NTP is vulnerable to a denial of service, caused by the failure to cover broadcast associations. A remote attacker could exploit this vulnerability to cause broadcast clients to flip into interleave mode.

CVSS Base Score: 3.7
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/113699&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-4957

Description: NTP is vulnerable to a denial of service, caused by the improper handling of packets. By sending specially crafted CRYPTO_NAK packets, an attacker could exploit this vulnerability to cause ntpd to crash.

CVSS Base Score: 7.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/113695&gt; 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-2015-8806

Description: Libxml2 is vulnerable to a denial of service, caused by a heap-buffer overread in dict.c. By persuading a victim to open a specially crafted file, a remote attacker could exploit this vulnerability to cause the application to crash.

CVSS Base Score: 4.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/110613&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-3627

Description: libxml2 is vulnerable to a denial of service, caused by an error in the xmlStringGetNodeList() function when parsing xml files while in recover mode. An attacker could exploit this vulnerability to exhaust the stack and cause a segmentation fault.

CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/111586&gt; 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-2016-4447

Description: libxml2 is vulnerable to a denial of service, caused by a heap-based buffer overflow. By persuading a victim to open a specially crafted XML file, a remote attacker could overflow a buffer and cause the application to crash.

CVSS Base Score: 4.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/113522&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-4483

Description: libxml2 is vulnerable to a denial of service, caused by an out-of-bounds read when parsing a specially crafted XML file if recover mode is used. By persuading a victim to open a specially crafted XML file, a remote attacker could exploit this vulnerability to cause the application to crash.

CVSS Base Score: 4.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/114279&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2015-5352

Description: OpenSSH could allow a remote authenticated attacker to bypass security restrictions, caused by an error when making connections after ForwardX11Timeout expired. If X11 connections are forwarded with ForwardX11Trusted=no, an attacker could exploit this vulnerability to bypass XSECURITY restrictions.

CVSS Base Score: 4.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/104418&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)

CVEID: CVE-2015-6563

Description: OpenSSH could allow a local attacker to bypass security restrictions, caused by the acceptance of extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests by the monitor component in sshd. An attacker could exploit this vulnerability to conduct impersonation attacks.

CVSS Base Score: 4
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/105881&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID: CVE-2015-6564

Description: OpenSSH could allow a local attacker to gain elevated privileges on the system, caused by a use-after-free error in the mm_answer_pam_free_ctx function. An attacker could exploit this vulnerability to gain elevated privileges on the system.

CVSS Base Score: 7.4
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/105882&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2016-6153

Description: SQLite could allow a local attacker to gain elevated privileges on the system, caused by the creation of temporary files in directory with insecure permissions. An attacker could exploit this vulnerability to obtain leaked data.

CVSS Base Score: 4
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/114715&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2016-0772

Description: Python’s smtplib library is vulnerable to a stripping attack. An exception isn’t returned by the Python’s smtplib library if StartTLS fails to establish correctly in the SMTP.starttls() function. An attacker with man-in-the-middle ability could exploit this vulnerability to strip out the STARTTLS command without generating an exception on the python SMTP client application and prevent the establishment of the TLS layer.

CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/114287&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

CVEID: CVE-2016-5699

Description: urllib2 and urllib for Python are vulnerable to HTTP header injection, caused by improper validation of input. By persuading a victim to visit a specially-crafted Web page, a remote attacker could exploit this vulnerability to inject arbitrary HTTP headers, which will allow the attacker to conduct various attacks against the vulnerable system, including cross-site scripting, cache poisoning or session hijacking.

CVSS Base Score: 6.5
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/114200&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

CVEID: CVE-2016-1000110

Description: Python could allow a remote attacker to redirect HTTP traffic of CGI application, caused by the failure to protect applications from the presence of untrusted client data in the HTTP_PROXY environment variable. By using a specially-crafted Proxy header in a HTTP request, an attacker could exploit this vulnerability to redirect outbound HTTP traffic to arbitrary proxy server. This is also known as the “HTTPOXY” vulnerability.

CVSS Base Score: 8.1
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/115381&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Remediation/Fixes:

Firmware fix versions are available on Fix Central:
<http://www.ibm.com/support/fixcentral/&gt;.

Workaround(s) & Mitigation(s):

None

References:

• Complete CVSS v3 Guide
• On-line Calculator v3

Related Information:
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Lenovo Product Security Advisories

Acknowledgement

None

Change History
30 March 2017: Original Copy Published

• The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an “industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response.” IBM PROVIDES THE CVSS SCORES “AS IS” WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.