VMware Tanzu products update for Libtasn1

1) Input validation error

EUVDB-ID: #VU18290

Risk: Low

CVSSv4.0: 5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-1000654

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the _asn1_expand_object_id(p_tree) function when parsing a specially crafted file with asn1Parser binary. An attacker can create a specially crafted file, pass it to the application and consume all available CPU resources on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

VMware Tanzu Application Service for VMs: All versions

VMware Tanzu Operations Manager: 2.9.0 - 2.10.38

Tanzu Greenplum for Kubernetes: 1.0.0 - 1.13.0

CPE2.3

• cpe:2.3:a:vmware:vmware_tanzu_application_service_for_vms:*:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.37:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.10.38:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:tanzu_greenplum_for_kubernetes:1.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:tanzu_greenplum_for_kubernetes:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:tanzu_greenplum_for_kubernetes:1.1.0:*:*:*:*:*:*:*

External links

https://tanzu.vmware.com/security/usn-5352-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.