Stored XSS via executable Bucket HTML
Published Oct 19, 2023 · Updated Aug 2, 2024
Stored XSS in Yamcs 5.8.6 allows remote authenticated users to execute JavaScript in another user’s browser through a Bucket file. The Bucket storage interface accepts attacker-supplied HTML containing script and later serves it for browser navigation without preventing script execution. The attacker needs permission to upload a file and the victim must open it; the script then runs in the victim’s Yamcs origin and can read or alter browser-accessible data.
Summary
What happened
Stored XSS in Yamcs 5.8.6 allows remote authenticated users to execute JavaScript in another user’s browser through a Bucket file. The Bucket storage interface accepts attacker-supplied HTML containing script and later serves it for browser navigation without preventing script execution. The attacker needs permission to upload a file and the victim must open it; the script then runs in the victim’s Yamcs origin and can read or alter browser-accessible data.
The record
- CVE
- CVE-2023-45280
- Published
- Oct 19, 2023
- Updated
- Aug 2, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 19, 2023CVE publishedPublication date reported by the CVE source.
- Aug 2, 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- Yamcs v5.8.6 stored XSS demonstrationfunctional · demonstrated
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Technologies
Your stack
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Your stack
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