Authenticated command execution via crafted thumbnail upload
Published Jun 23, 2023 · Updated Nov 27, 2024
Unrestricted file upload in Yoga Class Registration System 1.0 allows remote authenticated users to execute server commands via a thumbnail. The class thumbnail handler accepts an administrator-controlled path and extension, while images no larger than 640 by 480 pixels retain a payload-bearing PLTE chunk. Administrator access is required to place the resulting PHP file on the web server and invoke its commands remotely.
Summary
What happened
Unrestricted file upload in Yoga Class Registration System 1.0 allows remote authenticated users to execute server commands via a thumbnail. The class thumbnail handler accepts an administrator-controlled path and extension, while images no larger than 640 by 480 pixels retain a payload-bearing PLTE chunk. Administrator access is required to place the resulting PHP file on the web server and invoke its commands remotely.
The record
- CVE
- CVE-2023-1721
- Published
- Jun 23, 2023
- Updated
- Nov 27, 2024
- Vendor
- Online Computer and Laptop Store Project
- Product
- Yoga Class Registration System
- Classifications
- CWE-434, CAPEC-650, T1505.003
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Jun 23, 2023CVE publishedPublication date reported by the CVE source.
- Nov 27, 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=1.0
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
- Fluid Attacks thumbnail payload generatorfunctional · demonstrated
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Technologies
Your stack
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Your stack
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