New Linux Privilege Escalation Flaw Uncovered in Snap Package Manager
Feb 18, 2022
Multiple security vulnerabilities have been disclosed in Canonical's Snap software packaging and deployment system, the most critical of which can be exploited to escalate privilege to gain root privileges. Snaps are self-contained application packages that are designed to work on operating systems that use the Linux kernel and can be installed using a tool called snapd. Tracked as CVE-2021-44731 , the issue concerns a privilege escalation flaw in the snap-confine function, a program used internally by snapd to construct the execution environment for snap applications. The shortcoming is rated 7.8 on the CVSS scoring system. "Successful exploitation of this vulnerability allows any unprivileged user to gain root privileges on the vulnerable host," Bharat Jogi, director of vulnerability and threat research at Qualys, said , adding the weakness could be abused to "obtain full root privileges on default installations of Ubuntu." Red Hat, in an ind...
