Low-Priv Docker PrivEsc Vulnerability in Juniper Junos OS Evolved 20.4-21.4
CVE-2023-28960 Published on April 17, 2023
Junos OS Evolved: Docker repository is world-writeable, allowing low-privileged local user to inject files into Docker containers
An Incorrect Permission Assignment for Critical Resource vulnerability in Juniper Networks Junos OS Evolved allows a local, authenticated low-privileged attacker to copy potentially malicious files into an existing Docker container on the local system. A follow-on administrator could then inadvertently start the Docker container leading to the malicious files being executed as root. This issue only affects systems with Docker configured and enabled, which is not enabled by default. Systems without Docker started are not vulnerable to this issue. This issue affects Juniper Networks Junos OS Evolved: 20.4 versions prior to 20.4R3-S5-EVO; 21.2 versions prior to 21.2R3-EVO; 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 19.2R1-EVO.
Vulnerability Analysis
CVE-2023-28960 is exploitable with local system access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
Incorrect Permission Assignment for Critical Resource
The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. When a resource is given a permissions setting that provides access to a wider range of actors than required, it could lead to the exposure of sensitive information, or the modification of that resource by unintended parties. This is especially dangerous when the resource is related to program configuration, execution or sensitive user data.
Products Associated with CVE-2023-28960
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Affected Versions
Juniper Networks Junos OS Evolved:- Version unspecified and below 19.2R1-EVO is unaffected.
- Version 20.4 and below 20.4R3-S5-EVO is affected.
- Version 21.2 and below 21.2R3-EVO is affected.
- Version 21.3 and below 21.3R3-EVO is affected.
- Version 21.4 and below 21.4R2-EVO is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.