Exploitation Summary
EIP tracks 1 public exploit for CVE-2019-7303. PoCs published by Google Security Research.
AI-analyzed exploit summary This exploit demonstrates a bypass of the seccomp filter in snap by leveraging a discrepancy between the 64-bit comparison in the filter and the 32-bit command argument in the kernel's ioctl syscall. It allows the TIOCSTI ioctl to be executed despite the seccomp restriction.
Description
A 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.
Exploits (1)
This exploit demonstrates a bypass of the seccomp filter in snap by leveraging a discrepancy between the 64-bit comparison in the filter and the 32-bit command argument in the kernel's ioctl syscall. It allows the TIOCSTI ioctl to be executed despite the seccomp restriction.
References (2)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N