Service hang via unbounded Unicode tag normalization
Published Sep 10, 2024 · Updated Sep 10, 2024
Denial of service in Yeti 2.1.10 allows remote authenticated users to hang Windows deployments via oversized Unicode tags. The tag-processing path applies NFKD normalization to unbounded user-controlled text, and expansion characters such as U+2105 can triple the payload before normalization. A valid account and a Windows deployment are required; the resulting CPU and memory exhaustion can make the service unavailable.
Summary
What happened
Denial of service in Yeti 2.1.10 allows remote authenticated users to hang Windows deployments via oversized Unicode tags. The tag-processing path applies NFKD normalization to unbounded user-controlled text, and expansion characters such as U+2105 can triple the payload before normalization. A valid account and a Windows deployment are required; the resulting CPU and memory exhaustion can make the service unavailable.
The record
- CVE
- CVE-2024-45412
- Published
- Sep 10, 2024
- Updated
- Sep 10, 2024
- Vendor
- Yeti Platform
- Product
- Yeti
- Classifications
- CWE-770, T1499.004
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 10, 2024CVE publishedPublication date reported by the CVE source.
- Sep 10, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 2.1.11
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
- Million-character U+2105 tag payloadproof of concept · unverified
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
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo