Security Bulletin: Security Vulnerabilities affect IBM Cloud Private - nginx (CVE-2018-16844, CVE-2018-16845, CVE-2018-16843, CVE-2019-7401)

Security Bulletin

Summary

Security Vulnerabilities affect IBM Cloud Private - nginx

Vulnerability Details

CVEID: CVE-2018-16844
DESCRIPTION: nginx is vulnerable to a denial of service, caused by a flaw when complied with ngx_http_v2_module. By sending a specially-crafted HTTP/2 request, a remote attacker could exploit this vulnerability to cause excessive CPU consumption.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/152680 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2018-16845
DESCRIPTION: nginx is vulnerable to a denial of service, caused by an error when compiled with the ngx_http_mp4_module. By persuading a victim to open a specially-crafted mp4 file, a remote attacker could exploit this vulnerability to cause the application to enter into an infinite loop or obtain sensitive information from worker process memory.
CVSS Base score: 4.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/152681 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L)

CVEID: CVE-2018-16843
DESCRIPTION: nginx is vulnerable to a denial of service, caused by a flaw when complied with ngx_http_v2_module. By sending a specially-crafted HTTP/2 request, a remote attacker could exploit this vulnerability to cause excessive memory consumption.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/152679 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2019-7401
DESCRIPTION: NGINX Unit is vulnerable to a denial of service, caused by a heap-based buffer overflow in the router process. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause the router process to crash.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/156770 for the current score.
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

Affected Product(s)	Version(s)
IBM Cloud Private	3.2.1 CD
IBM Cloud Private	3.2.2 CD

Remediation/Fixes

Product defect fixes and security updates are only available for the two most recent Continuous Delivery (CD) update packages

IBM Cloud Private 3.2.1
IBM Cloud Private 3.2.2

For IBM Cloud Private 3.2.1, apply fix pack:

IBM Cloud Private 3.2.1.2203

For IBM Cloud Private 3.2.2, apply fix pack:

IBM Cloud Private 3.2.2.2203

For IBM Cloud Private 3.1.0, 3.1.1, 3.1.2, 3.2.0

Upgrade to the latest Continuous Delivery (CD) update package, IBM Cloud Private 3.2.2.
If required, individual product fixes can be made available between CD update packages for resolution of problems. Contact IBM support for assistance

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

21 April 2022: Initial Publication

*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.

Document Location

Worldwide

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Tips

Security Bulletin: Security Vulnerabilities affect IBM Cloud Private - nginx (CVE-2018-16844, CVE-2018-16845, CVE-2018-16843, CVE-2019-7401)