Researchers have identified a new malware family that was designed to backdoor and create persistence on VMware ESXi servers by leveraging legitimate functionality the hypervisor software supports. According to researchers from Mandiant who found and analyzed the backdoors, they were packaged and deployed on infected servers as vSphere Installation Bundles (VIBs). VIBs are software packages used to distribute components that extend VMware ESXi functionality. The malicious VIBs provided hackers with remote command execution and persistence capabilities on the servers and the ability to execute commands on the guest virtual machines running on the servers.
A vulnerability in the client forwarding code of multiple Cisco Access Points (APs) could allow an unauthenticated, adjacent attacker to inject packets from the native VLAN to clients within nonnative VLANs on an affected device. This vulnerability is due to a logic error on the AP that forwards packets that are destined to a wireless client if they are received on the native VLAN. An attacker could exploit this vulnerability by obtaining access to the native VLAN and directing traffic directly to the client through their MAC/IP combination. A successful exploit could allow the attacker to bypass VLAN separation and potentially also bypass any Layer 3 protection mechanisms that are deployed.
A vulnerability in the smart card login authentication of Cisco Duo for macOS could allow an unauthenticated attacker with physical access to bypass authentication. This vulnerability exists because the assigned user of a smart card is not properly matched with the authenticating user. An attacker could exploit this vulnerability by configuring a smart card login to bypass Duo authentication. A successful exploit could allow the attacker to use any personal identity verification (PIV) smart card for authentication, even if the smart card is not assigned to the authenticating user.
Insecure direct object references (IDOR) vulnerability in ExpressTech Quiz And Survey Master plugin <= 7.3.4 at WordPress allows attackers to change the content of the quiz.
Multiple vulnerabilities have been discovered in Microsoft Exchange Server, the most severe of which could allow for remote code execution. Microsoft Exchange Server is a mail server used to run and manage an organizations email services. Successful exploitation of the most severe of these vulnerabilities could allow for remote code execution in the context of the affected service account. Depending on the privileges associated with the account an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Service accounts that are configured to have fewer user rights on the system could be less impacted than those that operate with administrative user rights.
AppLock version 7.9.29 allows an attacker with physical access to the device to bypass biometric authentication. This is possible because the application did not correctly implement fingerprint validations.
