Vulnerability in Docker
CVE-2016-9962
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.
Vulnerability class: Race Condition
EPSS: 0.004 (32.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Docker
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
- cve@mitre.org (vendor-advisory, x_refsource_FEDORA)
- cve@mitre.org (x_refsource_CONFIRM, Issue Tracking)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2016-9962?
- CVE-2016-9962 is a medium-severity vulnerability in Docker, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.4/10. Published 2017-01-31.
- How severe is CVE-2016-9962?
- Medium severity. CVSS v3 base score is 6.4 out of 10.
- Is CVE-2016-9962 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.