CVE-2021-25491: Samsung Mobile Security

The cyberattacks, linked to a Chinese-speaking APT, deliver the new MysterySnail RAT malware to Windows servers.

Assuming system privilege is gained, possible buffer overflow vulnerabilities in the Vision DSP kernel driver prior to SMR Oct-2021 Release 1 allows privilege escalation to Root by hijacking loaded library.

An improper caller check logic of SMC call in TEEGRIS secure OS prior to SMR Oct-2021 Release 1 can be used to compromise TEE.

Exposure of information vulnerability in ipcdump prior to SMR Oct-2021 Release 1 allows an attacker detect device information via analyzing packet in log.

A possible guessing and confirming a byte memory vulnerability in Widevine trustlet prior to SMR Oct-2021 Release 1 allows attackers to read arbitrary memory address.

An improper error handling in Exynos CP booting driver prior to SMR Oct-2021 Release 1 allows local attackers to bypass a Secure Memory Protector of Exynos CP Memory.

An improper input validation vulnerability in DSP driver prior to SMR Sep-2021 Release 1 allows local attackers to get a limited kernel memory information.

A new analysis from F-Secure details commonly used phishing phrases and methods seen in attacks.

It was found that the "mknod" call derived from mknod(2) can create files pointing to devices on a glusterfs server node. An authenticated attacker could use this to create an arbitrary device and read data from any device attached to the glusterfs server node.