Security Bulletin: IBM App Connect Enterprise Certified Container may be affected by OpenSSL vulnerabilities (CVE-2021-3449 and CVE-2021-3450)

Summary

App Connect Enterprise Certified Container may be vulnerable to denial of service due to OpenSSL vulnerability CVE-2021-3449, and to cerificate verification bypass due to OpenSSL vulnerabiltiy CVE-2021-3450

Vulnerability Details

CVEID:CVE-2021-3449
**DESCRIPTION:**OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference in signature_algorithms processing. By sending a specially crafted renegotiation ClientHello message from a client, a remote attacker could exploit this vulnerability to cause the TLS server to crash.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/198752 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-2021-3450
**DESCRIPTION:**OpenSSL could allow a remote attacker to bypass security restrictions, caused by a a missing check in the validation logic of X.509 certificate chains by the X509_V_FLAG_X509_STRICT flag. By using any valid certificate or certificate chain to sign a specially crafted certificate, an attacker could bypass the check that non-CA certificates must not be able to issue other certificates and override the default purpose.
CVSS Base score: 7.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/198754 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H)

Affected Products and Versions

Remediation/Fixes

App Connect Enterprise Certified Container 1.0, 1.2 and 1.3 CD

Upgrade to App Connect Enterprise Certified Container to Operator version 1.4.0 (available in CASE 1.4.0) or higher, and ensure that all components are at 11.0.0.12-r1 or higher.

App Connect Enterprise Certified Container 1.1 LTS

Upgrade to App Connect Enterprise Certified Container Operator version 1.1.1 EUS (available in CASE 1.1.1) or higher, and ensure that all components are at 11.0.0.12-r1-eus or higher.

Workarounds and Mitigations

None