Cross-site scripting via eval-based AJAX deserialization
Published Dec 4, 2023 · Updated Oct 11, 2024
Cross-site scripting in Ajax.NET Professional before 21.12.22.1 allows remote attackers to run script in a victim's browser via crafted AJAX data. The AjaxPro.JSON.parse function rewrites date-like strings and passes the resulting untrusted AJAX response text directly to eval without validating it as data. Exploitation requires a victim to process an attacker-influenced AJAX response, enabling script execution in the application's origin and access to browser-visible data and actions.
Summary
What happened
Cross-site scripting in Ajax.NET Professional before 21.12.22.1 allows remote attackers to run script in a victim's browser via crafted AJAX data. The AjaxPro.JSON.parse function rewrites date-like strings and passes the resulting untrusted AJAX response text directly to eval without validating it as data. Exploitation requires a victim to process an attacker-influenced AJAX response, enabling script execution in the application's origin and access to browser-visible data and actions.
The record
- CVE
- CVE-2023-49289
- Published
- Dec 4, 2023
- Updated
- Oct 11, 2024
- Vendor
- Michael Schwarz
- Product
- Ajax.NET Professional
- Classifications
- CWE-79, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 4, 2023CVE publishedPublication date reported by the CVE source.
- Oct 11, 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=< 21.12.22.1
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
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Technologies
Your stack
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Your stack
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