CVE-2017-18367 Information

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.

CVSS Vector

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

Reference

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/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5