snap-confine in snapd before 2.38 incorrectly set the ownership of a snap application to the uid and gid of the first calling user. Consequ…

Description

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

References

• https://www.openwall.com/lists/oss-security/2019/04/18/4
• https://github.com/snapcore/snapd/commit/bdbfeebef03245176ae0dc323392bb0522a339b1
• [oss-security] 20190425 Re: Security issues in snapcraft snap-confine set*id binary mailing-list