A vulnerability in the Open Container Initiative runc CLI tool used by multiple products could allow an unauthenticated, remote attacker to escalate privileges on a targeted system. The vulnerability exists because the affected software improperly handles file descriptors related to /proc/self/exe. An attacker could exploit the vulnerability either by persuading a user to create a new container using an attacker-controlled image or by using the docker exec command to attach into an existing container that the attacker already has write access to. A successful exploit could allow the attacker to overwrite the host's runc binary file with a malicious file, escape the container, and execute arbitrary commands with root privileges on the host system. This advisory will be updated as additional information becomes available. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190215-runc
A vulnerability in the Open Container Initiative runc CLI tool used by multiple products could allow an unauthenticated, remote attacker to escalate privileges on a targeted system.
The vulnerability exists because the affected software improperly handles file descriptors related to /proc/self/exe. An attacker could exploit the vulnerability either by persuading a user to create a new container using an attacker-controlled image or by using the docker exec command to attach into an existing container that the attacker already has write access to. A successful exploit could allow the attacker to overwrite the host's runc binary file with a malicious file, escape the container, and execute arbitrary commands with root privileges on the host system.
This advisory will be updated as additional information becomes available.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190215-runc
The Vulnerable Products section will include Cisco bug IDs for each affected product or service. The bugs will be accessible through the Cisco Bug Search Tool and contain additional platform-specific information, including workarounds (if available) and fixed software releases.
The following table lists Cisco products that are affected by the vulnerability that is described in this advisory. If a future release date is indicated for software, the date provided represents an estimate based on all information known to Cisco as of the Last Updated date at the top of the advisory. Availability dates are subject to change based on a number of factors, including satisfactory testing results and delivery of other priority features and fixes. If no version or date is listed for an affected component (indicated by a blank field and/or an advisory designation of Interim), Cisco is continuing to evaluate the fix and will update the advisory as additional information becomes available. After the advisory is marked Final, customers should refer to the associated Cisco bug(s) for further details.
| Product | Cisco Bug ID | Fixed Release Availability |
|---|---|---|
| Network Management and Provisioning | ||
| Cisco Container Platform | CSCvo33929 | 3.1.0 (Mar 2019) |
| Routing and Switching - Enterprise and Service Provider | ||
| Viptela vContainer | CSCvo36349 | |
| Cisco Cloud Hosted Services | ||
| Cisco Cloudlock | CSCvo37511 | Cisco will update affected systems in Sept 2019 |
| Cisco Defense Orchestrator | CSCvo42107 | Cisco updated affected systems On-prem: 19.8 (Available) |
| Cisco Smart Software Manager Satellite | CSCvo49760 | |
Only products and services listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect the following products and services:
Network Application, Service, and AccelerationAny workarounds for a specific Cisco product or service will be documented in the relevant Cisco bugs, which are identified in the Vulnerable Products section of this advisory.
For information about fixed software releases, consult the Cisco bugs identified in the Vulnerable Products section of this advisory.
When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page, to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco TAC or their contracted maintenance providers.
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
On February 12, 2019, the runc maintainers publicly disclosed this vulnerability on the oss-sec mailing list. This announcement is at the following link: https://seclists.org/oss-sec/2019/q1/119.
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
| Version | Description | Section | Status | Date |
|---|---|---|---|---|
| 1.6 | Updated the lists, vulnerable products, and products confirmed not vulnerable. | Updated the lists of products under investigation, vulnerable products, and products confirmed not vulnerable. | Final | 2019-March-15 |
| 1.5 | Updated the lists of products under investigation, vulnerable products, and products confirmed not vulnerable. | Affected Products, Vulnerable Products, Products Confirmed Not Vulnerable | Interim | 2019-March-08 |
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