Security Bulletin: IBM API Connect V10 is impacted by denial of service vulnerabilities in Crunchy kernel (CVE-2020-8616, CVE-2020-8617)

Security Bulletin

Summary

IBM API Connect has addressed the following vulnerabilities.

Vulnerability Details

CVEID: CVE-2020-8616
DESCRIPTION: ISC BIND is vulnerable to a denial of service, caused by the failure to limit the number of fetches performed when processing referrals. By using specially crafted referrals, a remote attacker could exploit this vulnerability to cause the recursing server to issue a very large number of fetches in an attempt to process the referral.
CVSS Base score: 8.6
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/182126 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)

CVEID: CVE-2020-8617
DESCRIPTION: ISC BIND is vulnerable to a denial of service, caused by a logic error in code which checks TSIG validity. A remote attacker could exploit this vulnerability to trigger an assertion failure in tsig.c.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/182127 for the current score.
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

Affected Product(s)	Version(s)
API Connect	API Connect 10.0.0.0

Remediation/Fixes

Affected Product	Addressed in VRMF	APAR	Remediation/First Fix
IBM API Connect 10.0.0.0	IBM API Connect V10.0.1	LI81761	Addressed in IBM API Connect V10.0.1 Management server is impacted. Follow this link and find the "Management" image appropriate for your installation. http://www.ibm.com/support/fixcentral/swg/quickorder

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

07 Oct 2020: 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: IBM API Connect V10 is impacted by denial of service vulnerabilities in Crunchy kernel (CVE-2020-8616, CVE-2020-8617)