Security Bulletin: IBM Sterling B2B Integrator is vulnerable to denial of service due to Netty (CVE-2021-37136, CVE-2021-37137)

Summary

IBM Sterling B2B Intergrator has addressed the security vulnerabilities in Netty.

Vulnerability Details

CVEID:CVE-2021-37136
**DESCRIPTION:**Netty netty-codec is vulnerable to a denial of service, caused by not allow size restrictions for decompressed data in the Bzip2Decoder. By sending a specially-crafted input, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/211777 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)

CVEID:CVE-2021-37137
**DESCRIPTION:**Netty netty-codec is vulnerable to a denial of service, caused by not restrict the chunk length in the SnappyFrameDecoder. By sending a specially-crafted input, a remote attacker could exploit this vulnerability to cause excessive memory usage, and results in a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/211779 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

Remediation/Fixes

The IIM version 6.1.2.1 are available on Fix Central.

The container version of 6.1.2.1 is available in IBM Entitled Registry with following tags.

• cp.icr.io/cp/ibm-b2bi/b2bi:6.1.2.1 for IBM Sterling B2B Integrator
• cp.icr.io/cp/ibm-sfg/sfg:6.1.2.1 for IBM Sterling File Gateway

Workarounds and Mitigations

None