CVE-2019-7303
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.70%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 3.70% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-628
- Affected
- canonical/snapd · canonical/ubuntu linux
- Source
- security@ubuntu.com
References
- https://usn.ubuntu.com/3917-1/Third Party Advisory
- https://www.exploit-db.com/exploits/46594Exploit, Third Party Advisory, VDB Entry
- https://usn.ubuntu.com/3917-1/Third Party Advisory
- https://www.exploit-db.com/exploits/46594Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.