Administrator session theft via stored comment script
Published Jun 20, 2023 · Updated Dec 10, 2024
Stored cross-site scripting in ZrLog 2.1.3 allows remote attackers to read an administrator's session cookie through a crafted comment. The /post/addComment function stores unneutralized script content supplied through the nickame parameter and later renders it in the administration interface. No authentication is required to submit the comment, but exploitation requires an administrator to open the affected backend view.
Summary
What happened
Stored cross-site scripting in ZrLog 2.1.3 allows remote attackers to read an administrator's session cookie through a crafted comment. The /post/addComment function stores unneutralized script content supplied through the nickame parameter and later renders it in the administration interface. No authentication is required to submit the comment, but exploitation requires an administrator to open the affected backend view.
The record
- CVE
- CVE-2020-21052
- Published
- Jun 20, 2023
- Updated
- Dec 10, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-79, T1539
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 20, 2023CVE publishedPublication date reported by the CVE source.
- Dec 10, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- ZrLog stored-XSS reproduction in GitHub Issue #56proof of concept · demonstrated
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Technologies
Your stack
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Your stack
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