Authenticated Local File Overwrite via CLI on Cisco TelePresence CE/RoomOS
CVE-2023-20091 Published on November 15, 2024
Cisco TelePresence Collaboration Endpoint and RoomOS Software Arbitrary File Overwrite Vulnerability
A vulnerability in the CLI of Cisco TelePresence CE and RoomOS could allow an authenticated, local attacker to overwrite arbitrary files on the local file system of an affected device.
This vulnerability is due to improper access controls on files that are on the local file system. An attacker could exploit this vulnerability by placing a symbolic link in a specific location on the local file system of an affected device. A successful exploit could allow the attacker to overwrite arbitrary files on the affected device. To exploit this vulnerability, an attacker would need to have a remote support user account.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Vulnerability Analysis
CVE-2023-20091 can be exploited with local system access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity, and a small impact on availability.
Weakness Type
What is a Symlink following Vulnerability?
The software, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the software to operate on unauthorized files. A software system that allows UNIX symbolic links (symlink) as part of paths whether in internal code or through user input can allow an attacker to spoof the symbolic link and traverse the file system to unintended locations or access arbitrary files. The symbolic link can permit an attacker to read/write/corrupt a file that they originally did not have permissions to access.
CVE-2023-20091 has been classified to as a Symlink following vulnerability or weakness.
Products Associated with CVE-2023-20091
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Affected Versions
Cisco TelePresence Endpoint Software (TC/CE):- Version CE9.10.2 is affected.
- Version CE9.1.4 is affected.
- Version CE9.9.3 is affected.
- Version CE9.10.3 is affected.
- Version CE9.1.5 is affected.
- Version CE9.2.4 is affected.
- Version CE9.10.1 is affected.
- Version CE9.13.0 is affected.
- Version CE9.1.2 is affected.
- Version CE9.1.1 is affected.
- Version CE9.9.4 is affected.
- Version CE9.2.1 is affected.
- Version CE9.1.3 is affected.
- Version CE9.0.1 is affected.
- Version CE9.1.6 is affected.
- Version CE9.12.4 is affected.
- Version CE9.2.2 is affected.
- Version CE9.12.3 is affected.
- Version CE9.2.3 is affected.
- Version CE9.13.1 is affected.
- Version CE9.14.3 is affected.
- Version CE9.14.4 is affected.
- Version CE9.13.2 is affected.
- Version CE9.12.5 is affected.
- Version CE9.14.5 is affected.
- Version CE9.15.0.10 is affected.
- Version CE9.15.0.11 is affected.
- Version CE9.13.3 is affected.
- Version CE9.15.0.13 is affected.
- Version CE9.14.6 is affected.
- Version CE9.15.3.17 is affected.
- Version CE9.14.7 is affected.
- Version CE9.15.0.19 is affected.
- Version CE9.15.3.19 is affected.
- Version CE9.15.3.18 is affected.
- Version CE9.15.3.22 is affected.
- Version CE9.15.8.12 is affected.
- Version CE9.15.10.8 is affected.
- Version CE9.15.3.26 is affected.
- Version CE9.15.3.25 is affected.
- Version CE9.15.13.0 is affected.
- Version CE9.15.15.4 is affected.
- Version CE9.15.16.5 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.