Service crash via unbounded YAML document size
Published Nov 11, 2022 · Updated Sep 16, 2024
Stack exhaustion in SnakeYAML before 1.32 allows remote attackers to crash applications that parse untrusted YAML documents. ScannerImpl accepts an unbounded number of input code points and continues parsing crafted input until the JVM stack is exhausted. Reachability requires an embedding application to pass attacker-controlled YAML to the parser; the resulting process crash causes a service interrupt.
Summary
What happened
Stack exhaustion in SnakeYAML before 1.32 allows remote attackers to crash applications that parse untrusted YAML documents. ScannerImpl accepts an unbounded number of input code points and continues parsing crafted input until the JVM stack is exhausted. Reachability requires an embedding application to pass attacker-controlled YAML to the parser; the resulting process crash causes a service interrupt.
The record
- CVE
- CVE-2022-41854
- Published
- Nov 11, 2022
- Updated
- Sep 16, 2024
- Vendor
- SnakeYAML
- Product
- SnakeYAML
- Classifications
- CWE-787, CWE-121, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 11, 2022CVE publishedPublication date reported by the CVE source.
- Sep 16, 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=unspecified <1.32
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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