Script execution via unsanitized Markdown event handler
Published Oct 23, 2023 · Updated Sep 12, 2024
Cross-site scripting in VNote 3.0 through 3.17 allows remote attackers to execute script when a user opens and clicks a crafted note. The Markdown renderer preserves an attacker-supplied onclick handler on a custom xss element even when protect_from_xss is enabled. Exploitation requires the user to open the supplied note and click its injected text; the published record establishes content modification, not system code execution.
Summary
What happened
Cross-site scripting in VNote 3.0 through 3.17 allows remote attackers to execute script when a user opens and clicks a crafted note. The Markdown renderer preserves an attacker-supplied onclick handler on a custom xss element even when protect_from_xss is enabled. Exploitation requires the user to open the supplied note and click its injected text; the published record establishes content modification, not system code execution.
The record
- CVE
- CVE-2023-5701
- Published
- Oct 23, 2023
- Updated
- Sep 12, 2024
- Vendor
- VNoteX Team
- Product
- VNote
- Classifications
- CWE-79, T1204.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 23, 2023CVE publishedPublication date reported by the CVE source.
- Sep 12, 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=3.0
- Affected versionversion=3.1
- Affected versionversion=3.10
- Affected versionversion=3.11
- Affected versionversion=3.12
- Affected versionversion=3.13
- Affected versionversion=3.14
- Affected versionversion=3.15
- Affected versionversion=3.16
- Affected versionversion=3.17
- Affected versionversion=3.2
- Affected versionversion=3.3
- Affected versionversion=3.4
- Affected versionversion=3.5
- Affected versionversion=3.6
- Affected versionversion=3.7
- Affected versionversion=3.8
- Affected versionversion=3.9
What conditions does exploitation require?
What is affected?
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
- VNote Markdown onclick XSS reproductionproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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