VulnerabilityModified
CVE-2017-18367
A process running under a restrictive seccomp filter that specified multiple syscall arguments could bypass intended access restrictions by specifying a single matching argument.
HIGH 7.5EPSS 2.43%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 2.43% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- libseccomp-golang project/libseccomp-golang
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2019/04/25/6Mailing List, Patch, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:4087
- https://access.redhat.com/errata/RHSA-2019:4090
- https://github.com/seccomp/libseccomp-golang/commit/06e7a29f36a34b8cf419aeb87b979ee508e58f9ePatch, Third Party Advisory
- https://github.com/seccomp/libseccomp-golang/issues/22Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00016.html
- https://usn.ubuntu.com/4574-1/
- http://www.openwall.com/lists/oss-security/2019/04/25/6Mailing List, Patch, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:4087
- https://access.redhat.com/errata/RHSA-2019:4090
- https://github.com/seccomp/libseccomp-golang/commit/06e7a29f36a34b8cf419aeb87b979ee508e58f9ePatch, Third Party Advisory
- https://github.com/seccomp/libseccomp-golang/issues/22Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00016.html
- https://usn.ubuntu.com/4574-1/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.