Authenticated arbitrary file overwrite via symlink following
Published Nov 15, 2024 · Updated Nov 15, 2024
Symlink following in the CLI of Cisco TelePresence CE before 9.15.17.4 allows local users to overwrite arbitrary files. The CLI follows a symbolic link placed at a specific filesystem location because file access controls do not prevent the link target from being overwritten. A remote support user account is required, and exploitation can alter arbitrary files and partially interrupt the device.
Summary
What happened
Symlink following in the CLI of Cisco TelePresence CE before 9.15.17.4 allows local users to overwrite arbitrary files. The CLI follows a symbolic link placed at a specific filesystem location because file access controls do not prevent the link target from being overwritten. A remote support user account is required, and exploitation can alter arbitrary files and partially interrupt the device.
The record
- CVE
- CVE-2023-20091
- Published
- Nov 15, 2024
- Updated
- Nov 15, 2024
- Vendor
- ClamAV
- Product
- Cisco TelePresence Endpoint Software (TC/CE)
- Classifications
- CWE-61, CAPEC-27
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 15, 2024CVE publishedPublication date reported by the CVE source.
- Nov 15, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=CE9.0.1
- Affected versionversion=CE9.10.1
- Affected versionversion=CE9.10.2
- Affected versionversion=CE9.10.3
- Affected versionversion=CE9.1.1
- Affected versionversion=CE9.1.2
- Affected versionversion=CE9.12.3
- Affected versionversion=CE9.12.4
- Affected versionversion=CE9.12.5
- Affected versionversion=CE9.1.3
- Affected versionversion=CE9.13.0
- Affected versionversion=CE9.13.1
- Affected versionversion=CE9.13.2
- Affected versionversion=CE9.13.3
- Affected versionversion=CE9.1.4
- Affected versionversion=CE9.14.3
- Affected versionversion=CE9.14.4
- Affected versionversion=CE9.14.5
- Affected versionversion=CE9.14.6
- Affected versionversion=CE9.14.7
- Affected versionversion=CE9.1.5
- Affected versionversion=CE9.15.0.10
- Affected versionversion=CE9.15.0.11
- Affected versionversion=CE9.15.0.13
- Affected versionversion=CE9.15.0.19
- Affected versionversion=CE9.15.10.8
- Affected versionversion=CE9.15.13.0
- Affected versionversion=CE9.15.15.4
- Affected versionversion=CE9.15.16.5
- Affected versionversion=CE9.15.3.17
- Affected versionversion=CE9.15.3.18
- Affected versionversion=CE9.15.3.19
- Affected versionversion=CE9.15.3.22
- Affected versionversion=CE9.15.3.25
- Affected versionversion=CE9.15.3.26
- Affected versionversion=CE9.15.8.12
- Affected versionversion=CE9.1.6
- Affected versionversion=CE9.2.1
- Affected versionversion=CE9.2.2
- Affected versionversion=CE9.2.3
- Affected versionversion=CE9.2.4
- Affected versionversion=CE9.9.3
- Affected versionversion=CE9.9.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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