Security Bulletin: Vulnerabilities CVE-2018-1333 and CVE-2018-8011 in the IBM i HTTP Server affect IBM i.

Security Bulletin

Summary

HTTP Server is supported by IBM i. IBM i has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2018-8011
DESCRIPTION: Apache HTTP Server is vulnerable to a denial of service, caused by a NULL pointer dereference in the mod_md challenge handler. By sending a specially crafted HTTP request, a remote attacker could exploit this vulnerability to cause the child process to segfault.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/146700 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-2018-1333
DESCRIPTION: Apache HTTP Server is vulnerable to a denial of service. By sending specially crafted HTTP/2 requests, a remote attacker could exploit this vulnerability to cause worker exhaustion.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/146701 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)

Affected Products and Versions

Release 7.3 of IBM i is affected.

Remediation/Fixes

The issue can be fixed by applying a PTF to IBM i.

Release 7.3 of IBM i is supported and will be fixed.

http://www-933.ibm.com/support/fixcentral/

The IBM i PTF numbers are:

Release 7.3 – SI68124

Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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*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.

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Tips

Security Bulletin: Vulnerabilities CVE-2018-1333 and CVE-2018-8011 in the IBM i HTTP Server affect IBM i.