CWE-345

Emerson DeltaV Distributed Control System (DCS) has insufficient verification of firmware integrity (an inadequate checksum approach, and no signature). This affects versions before 14.3 of DeltaV M-series, DeltaV S-series, DeltaV P-series, DeltaV SIS, and DeltaV CIOC/EIOC/WIOC IO cards.

JTEKT TOYOPUC PLCs through 2022-04-29 do not ensure data integrity. They utilize the unauthenticated CMPLink/TCP protocol for engineering purposes, including downloading projects and control logic to the PLC. Control logic is downloaded to the PLC on a block-by-block basis with a given memory address and a blob of machine code. The logic that is downloaded to the PLC is not cryptographically authenticated, allowing an attacker to execute arbitrary machine code on the PLC’s CPU module in the context of the runtime. In the case of the PC10G-CPU, and likely for other CPU modules of the TOYOPUC family, a processor without MPU or MMU is used and this no memory protection or privilege-separation capabilities are available, giving an attacker full control over the CPU.

github-action-merge-dependabot is an action that automatically approves and merges dependabot pull requests (PRs). Prior to version 3.2.0, github-action-merge-dependabot does not check if a commit created by dependabot is verified with the proper GPG key. There is just a check if the actor is set to `dependabot[bot]` to determine if the PR is a legit PR. Theoretically, an owner of a seemingly valid and legit action in the pipeline can check if the PR is created by dependabot and if their own action has enough permissions to modify the PR in the pipeline. If so, they can modify the PR by adding a second seemingly valid and legit commit to the PR, as they can set arbitrarily the username and email in for commits in git. Because the bot only checks if the actor is valid, it would pass the malicious changes through and merge the PR automatically, without getting noticed by project maintainers. It would probably not be possible to determine where the malicious commit came from, as it would only say `dependabot[bot]` and the corresponding email-address. Version 3.2.0 contains a patch for this issue.

An issue was discovered in certain Verbatim drives through 2022-03-31. Due to missing integrity checks, an attacker can manipulate the content of the emulated CD-ROM drive (containing the Windows and macOS client software). The content of this emulated CD-ROM drive is stored as an ISO-9660 image in the hidden sectors of the USB drive, that can only be accessed using special IOCTL commands, or when installing the drive in an external disk enclosure. By manipulating this ISO-9660 image or replacing it with another one, an attacker is able to store malicious software on the emulated CD-ROM drive. This software may get executed by an unsuspecting victim when using the device. For example, an attacker with temporary physical access during the supply chain could program a modified ISO-9660 image on a device that always accepts an attacker-controlled password for unlocking the device. If the attacker later on gains access to the used USB drive, he can simply decrypt all contained user data. Storing arbitrary other malicious software is also possible. This affects Executive Fingerprint Secure SSD GDMSFE01-INI3637-C VER1.1 and Fingerprint Secure Portable Hard Drive Part Number #53650.

Emerson Electric’s Proficy Machine Edition Version 9.00 and prior is vulenrable to CWE-353 Missing Support for Integrity Check, and has no authentication or authorization of data packets after establishing a connection for the SRTP protocol.

Emerson Electric’s Proficy Machine Edition Version 9.00 and prior is vulnerable to CWE-345 Insufficient Verification of Data Authenticity, and can display logic that is different than the compiled logic.