CVE-2017-18367

high

Description

libseccomp-golang 0.9.0 and earlier incorrectly generates BPFs that OR multiple arguments rather than ANDing them. A process running under a restrictive seccomp filter that specified multiple syscall arguments could bypass intended access restrictions by specifying a single matching argument.

References

http://www.openwall.com/lists/oss-security/2019/04/25/6

https://access.redhat.com/errata/RHSA-2019:4087

https://access.redhat.com/errata/RHSA-2019:4090

https://github.com/seccomp/libseccomp-golang/commit/06e7a29f36a34b8cf419aeb87b979ee508e58f9e

https://github.com/seccomp/libseccomp-golang/issues/22

https://lists.debian.org/debian-lts-announce/2020/08/msg00016.html

https://usn.ubuntu.com/4574-1/

Details

Source: MITRE

Published: 2019-04-24

Updated: 2020-10-14

Type: CWE-20

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH