Security Bulletin: Vulnerabilities in cURL affect IBM Flex System FC3171 8Gb SAN Switch and SAN Pass-thru (CVE-2017-8816 CVE-2017-8817 CVE-2017-8818)

Summary

IBM Flex System FC3171 8Gb SAN Switch and SAN Pass-thru has addressed the following vulnerabilities in cURL.

Vulnerability Details

Summary

IBM Flex System FC3171 8Gb SAN Switch and SAN Pass-thru has addressed the following vulnerabilities in cURL.

Vulnerability Details

CVEID: CVE-2017-8816

Description: cURL libcurl is vulnerable to a buffer overflow, caused by an integer overflow flaw in the NTLM authentication feature. By using vectors involving long user and password fields, a remote attacker could overflow a buffer and execute arbitrary code and cause the application to crash.

CVSS Base Score: 9.8
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/135657&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:H/I:H/A:H)

CVEID: CVE-2017-8817

Description: cURL libcurl could allow a remote attacker to bypass security restrictions, caused by an out-of-bounds read flaw in the FTP wildcard matching function (CURLOPT_WILDCARDMATCH). By using a string that ends with an ‘’[‘’ character, an attacker could exploit this vulnerability to redirect the victim to an arbitrary site.

CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/135658&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:L/A:N)

CVEID: CVE-2017-8818

Description: cURL libcurl is vulnerable to a denial of service, caused by an out-of-bounds access flaw in the SSL library. By sending a specially-crafted request, a remote 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/135659&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)

Affected Products and Versions

Remediation/Fixes

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

Workarounds and Mitigations

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
15 June 2018: 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.