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Security Bulletin: Security vulnerabilities have been identified in IBM HTTP Server shipped with IBM Rational ClearCase (CVE-2017-15710, CVE-2017-15715, CVE-2018-1301)

Created by John T Kohl on
Published URL:
https://www.ibm.com/support/pages/node/570009
570009

Security Bulletin


Summary

IBM HTTP Server (IHS) is shipped as a component of IBM Rational ClearCase. Information about security vulnerabilities affecting IHS has been published in a security bulletin.

Vulnerability Details

Refer to the security bulletin(s) listed in the Remediation/Fixes section.

Affected Products and Versions

IBM Rational ClearCase, ClearCase Remote Client (CCRC) WAN server component.

Versions 8.0.0.x, 8.0.1.x, 9.0.0.x, 9.0.1.x:


    This vulnerability only applies to the CCRC WAN server component, and only for certain levels of WebSphere Application Server.

Remediation/Fixes

Refer to the following security bulletins for vulnerability details and information about fixes addressed by IBM HTTP Server (IHS) which is shipped with IBM Rational ClearCase.

Principal Product and Version(s)Affected Supporting Product and VersionAffected Supporting Product Security Bulletin
IBM Rational ClearCase, versions 8.0.0.x, 8.0.1.x, 9.0.0.x, 9.0.1.xIBM HTTP Server version 7.0, 8.0, 8.5, 9.0Security Bulletin: Multiple vulnerabilities in the IBM HTTP Server (CVE-2017-15710, CVE-2017-15715, CVE-2018-1301)

ClearCase Versions
Applying the fix
8.0.0.x
8.0.1.x
9.0.0.x
9.0.1.x		Apply the appropriate IBM HTTP Server fix (see bulletin link above) directly to your CCRC WAN server host. No ClearCase-specific steps are necessary.

Workarounds and Mitigations

None.

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Important Note

IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.

References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

24 April 2018: Original version 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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Internal Use Only

CVEID: CVE-2018-1301
DESCRIPTION: Apache HTTPD is vulnerable to a denial of service, caused by an out-of-bounds access error after a header size limit has been reached reading the HTTP header. By sending a specially crafted HTTP request, an attacker could exploit this vulnerability to cause the service to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/140852 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-2017-15715
DESCRIPTION: Apache HTTPD could allow a remote attacker to bypass security restrictions, caused by the < FilesMatch > expression matching '$' to a newline character in a malicious filename instead of the end of the filename. By matching the trailing portion of the filename, an attacker could exploit to bypass security controls that use the < FilesMatch > directive.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/140857 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:L/A:N)

CVEID: CVE-2017-15710
DESCRIPTION: Apache HTTPD is vulnerable to a denial of service, caused by an out-of-bounds memory write error. By sending a specially crafted Accept-Language header value, an attacker could exploit this vulnerability to cause the service to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/140858 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)

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Document Information

Modified date:
10 July 2018

UID

swg22015803

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