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Vulnerability Details : CVE-2019-5736

runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows attackers to overwrite the host runc binary (and consequently obtain host root access) by leveraging the ability to execute a command as root within one of these types of containers: (1) a new container with an attacker-controlled image, or (2) an existing container, to which the attacker previously had write access, that can be attached with docker exec. This occurs because of file-descriptor mishandling, related to /proc/self/exe.
Published 2019-02-11 19:29:00
Updated 2021-12-16 18:38:05
Source MITRE
View at NVD,   CVE.org
At least one public exploit which can be used to exploit this vulnerability exists!

Exploit prediction scoring system (EPSS) score for CVE-2019-5736

Probability of exploitation activity in the next 30 days: 0.31%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 66 % EPSS Score History EPSS FAQ

Metasploit modules for CVE-2019-5736

  • Docker Container Escape Via runC Overwrite
    Disclosure Date : 2019-01-01
    exploit/linux/local/docker_runc_escape
    This module leverages a flaw in `runc` to escape a Docker container and get command execution on the host as root. This vulnerability is identified as CVE-2019-5736. It overwrites the `runc` binary with the payload and wait for someone to use `docker exec` to get into the container. This will trigger the payload execution. Note that executing this exploit carries important risks regarding the Docker installation integrity on the target and inside the container ('Side Effects' section in the documentation).

CVSS scores for CVE-2019-5736

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
9.3
 HIGH AV:N/AC:M/Au:N/C:C/I:C/A:C
8.6
10.0
 [email protected]
8.6
 HIGH CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
1.8
6.0
 [email protected]

CWE ids for CVE-2019-5736

References for CVE-2019-5736

Products affected by CVE-2019-5736

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