CVE-2019-7303

Public Exploit
Snapd seccomp filter TIOCSTI ioctl bypass

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.84% Top 30%
Third-Party Advisory ubuntu.com Third-Party Advisory exploit-db.com
Affected: Canonical snapd
Published at:
Updated at:

References

Link Tags
https://usn.ubuntu.com/3917-1/ third party advisory
https://www.exploit-db.com/exploits/46594 exploit vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-7303?
CVE-2019-7303 has been scored as a high severity vulnerability.
How to fix CVE-2019-7303?
To fix CVE-2019-7303, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-7303 being actively exploited in the wild?
It is possible that CVE-2019-7303 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-7303?
CVE-2019-7303 affects Canonical snapd.
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