—–BEGIN PGP SIGNED MESSAGE—–
Hash: SHA1
Cisco Security Advisory: Container Privilege Escalation Vulnerability Affecting Cisco Products: February 2019
Advisory ID: cisco-sa-20190215-runc
Revision: 1.0
For Public Release: 2019 February 15 17:00 GMT
Last Updated: 2019 February 15 17:00 GMT
CVE ID(s): CVE-2019-5736
+———————————————————————
Summary
=======
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 [“https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190215-runc”]
—–BEGIN PGP SIGNATURE—–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=IMUK
—–END PGP SIGNATURE—–
_______________________________________________
cust-security-announce mailing list
cust-security-announce@cisco.com
To unsubscribe, send the command “unsubscribe” in the subject of your message to cust-security-announce-leave@cisco.com