CVE-2016-9962
RunC allowed additional container processes via 'runc exec' to be ptraced by the pid 1 of the container.
Does this matter?
Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.
Description
RunC allowed additional container processes via 'runc exec' to be ptraced by the pid 1 of the container. This allows the main processes of the container, if running as root, to gain access to file-descriptors of these new processes during the initialization and can lead to container escapes or modification of runC state before the process is fully placed inside the container.
- CVSS 3.0
- 6.4 MEDIUMCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.41% probability · 35th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- docker/docker
- Source
- cve@mitre.org
EPSS 0.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://rhn.redhat.com/errata/RHSA-2017-0116.html
- http://rhn.redhat.com/errata/RHSA-2017-0123.html
- http://rhn.redhat.com/errata/RHSA-2017-0127.html
- http://seclists.org/fulldisclosure/2017/Jan/21Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2017/Jan/29Mailing List, Third Party Advisory
- http://www.securityfocus.com/archive/1/540001/100/0/threaded
- http://www.securityfocus.com/bid/95361Third Party Advisory, VDB Entry
- https://access.redhat.com/security/vulnerabilities/cve-2016-9962Third Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1012568#c6Issue Tracking
- https://github.com/docker/docker/releases/tag/v1.12.6Vendor Advisory
- https://github.com/opencontainers/runc/commit/50a19c6ff828c58e5dab13830bd3dacde268afe5Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQAXJMMLRU7DD2IMG47SR2K4BOFFG7FZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FINGBFMIXBG6B6ZWYH3TMRP5V3PDBNXR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UVM7FCOQMPKOFLDTUYSS4ES76DDM56VP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WUQ3MQNEL5IBZZLMLR72Q4YDCL2SCKRK/
- https://security.gentoo.org/glsa/201701-34Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0116.html
- http://rhn.redhat.com/errata/RHSA-2017-0123.html
- http://rhn.redhat.com/errata/RHSA-2017-0127.html
- http://seclists.org/fulldisclosure/2017/Jan/21Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2017/Jan/29Mailing List, Third Party Advisory
- http://www.securityfocus.com/archive/1/540001/100/0/threaded
- http://www.securityfocus.com/bid/95361Third Party Advisory, VDB Entry
- https://access.redhat.com/security/vulnerabilities/cve-2016-9962Third Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1012568#c6Issue Tracking
- https://github.com/docker/docker/releases/tag/v1.12.6Vendor Advisory
- https://github.com/opencontainers/runc/commit/50a19c6ff828c58e5dab13830bd3dacde268afe5Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQAXJMMLRU7DD2IMG47SR2K4BOFFG7FZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FINGBFMIXBG6B6ZWYH3TMRP5V3PDBNXR/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UVM7FCOQMPKOFLDTUYSS4ES76DDM56VP/
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.