VMware Tanzu products update for BusyBox

1) Improper Handling of Exceptional Conditions

EUVDB-ID: #VU51741

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-28831

CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions

Exploit availability: No

Description

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

The vulnerability exists due to improper handling of error bit on the huft_build result pointer in decompress_gunzip.c. A remote attacker can pass malformed gzip data to the application, trigger an invalid free and perform a denial of service (DoS) attack.

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 - 2.10.39

Isolation Segment: All versions

CPE2.3

• cpe:2.3:a:vmware:vmware_tanzu_application_service_for_vms:*:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.0:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.1:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.2:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.3:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.4:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.5:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.6:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.7:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:vmware_tanzu_operations_manager:2.9.8:*:*:*:*:*:*:*
• cpe:2.3:a:vmware:isolation_segment:*:*:*:*:*:*:*:*

External links

https://tanzu.vmware.com/security/usn-5179-2

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.