CVE-2019-7303

NameCVE-2019-7303
DescriptionA vulnerability in the seccomp filters of Canonical snapd before version 2.37.4 allows a strict mode snap to insert characters into a terminal on a 64-bit host. The seccomp rules were generated to match 64-bit ioctl(2) commands on a 64-bit platform; however, the Linux kernel only uses the lower 32 bits to determine which ioctl(2) commands to run. This issue affects: Canonical snapd versions prior to 2.37.4.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
snapd (PTS)stretch (security)2.21-2+deb9u1vulnerable
stretch (lts), stretch2.21-2+deb9u3vulnerable
buster (security), buster, buster (lts)2.37.4-1+deb10u3fixed
bullseye (security), bullseye2.49-1+deb11u2fixed
bookworm2.57.6-1fixed
trixie, sid2.65.3-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
snapdsource(unstable)2.37.4-1low

Notes

[stretch] - snapd <no-dsa> (Minor issue)
https://bugs.launchpad.net/snapd/+bug/1812973

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