CVE-2023-20093 Vulnerability Analysis & Exploit Details

CVE-2023-20093
Vulnerability Scoring

4.4
/10
Medium Risk

The vulnerability CVE-2023-20093 could compromise system integrity but typically requires user interaction to be exploited.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: High
    High-level privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2023-20093 Details

Status: Analyzed

Last updated: 🕔 30 Jul 2025, 17:15 UTC
Originally published on: 🕓 15 Nov 2024, 16:15 UTC

Time between publication and last update: 257 days

CVSS Release: version 3

CVSS3 Source

psirt@cisco.com

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CVE-2023-20093 Vulnerability Summary

CVE-2023-20093: Three vulnerabilities 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. These vulnerabilities are due to improper access controls on files that are on the local file system. An attacker could exploit these vulnerabilities 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 these vulnerabilities, an attacker would need to have a remote support user account. Note: CVE-2023-20092 does not affect Cisco DX70, DX80, TelePresence MX Series, or TelePresence SX Series devices. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

Assessing the Risk of CVE-2023-20093

Access Complexity Graph

The exploitability of CVE-2023-20093 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2023-20093

The exploitability of CVE-2023-20093 is influenced by multiple factors. Security teams should analyze system configurations and apply appropriate countermeasures to mitigate threats.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2023-20093, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2023-20093, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2023-20093 has no significant impact on data confidentiality.
  • Integrity: High
    CVE-2023-20093 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: None
    CVE-2023-20093 does not impact system availability.

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.043% (probability of exploit)

EPSS Percentile: 12.0% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 88.0% of others.

CVE-2023-20093 References

External References

CWE Common Weakness Enumeration

CWE-61

CAPEC Common Attack Pattern Enumeration and Classification

  • Leveraging Race Conditions via Symbolic Links CAPEC-27 This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.

Vulnerable Configurations

  • cpe:2.3:o:cisco:roomos:10.0.1.2:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.0.1.2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.1.1.2:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.1.1.2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.2.1.3:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.2.1.3:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.3.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.3.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.3.1.2:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.3.1.2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.3.2.0:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.3.2.0:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.3.3.0:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.3.3.0:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.3.4.0:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.3.4.0:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.4.1.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.4.1.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.6.1.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.6.1.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.7.1.2:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.7.1.2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.8.2.5:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.8.2.5:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.8.4.0:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.8.4.0:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.11.3.0:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.11.3.0:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.11.5.2:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.11.5.2:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.15.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.15.1:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.15.3.0:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.15.3.0:*:*:*:*:*:*:*
  • cpe:2.3:o:cisco:roomos:10.20.1:*:*:*:*:*:*:*
    cpe:2.3:o:cisco:roomos:10.20.1:*:*:*:*:*:*:*

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