Denial of service via unbounded BigDecimal scale
Published Jul 7, 2023 · Updated Oct 7, 2024
Denial of service in Apache Johnzon 1.2.20 and earlier allows remote attackers to stall JSON processing with a large-scale number. Apache Johnzon’s JSON number deserialization accepts an exponent such as 1e20000000 as a BigDecimal without bounding its scale, driving a very slow BigDecimal-to-BigInteger conversion. Reachability requires an application to pass attacker-controlled JSON into the affected mapper path; the conversion consumes processing time and interrupts service without reported data disclosure or modification.
Summary
What happened
Denial of service in Apache Johnzon 1.2.20 and earlier allows remote attackers to stall JSON processing with a large-scale number. Apache Johnzon’s JSON number deserialization accepts an exponent such as 1e20000000 as a BigDecimal without bounding its scale, driving a very slow BigDecimal-to-BigInteger conversion. Reachability requires an application to pass attacker-controlled JSON into the affected mapper path; the conversion consumes processing time and interrupts service without reported data disclosure or modification.
The record
- CVE
- CVE-2023-33008
- Published
- Jul 7, 2023
- Updated
- Oct 7, 2024
- Vendor
- The Apache Software Foundation
- Product
- Apache Johnzon
- Classifications
- CWE-502, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 7, 2023CVE publishedPublication date reported by the CVE source.
- Oct 7, 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=0 <=1.2.20
- Affected versionversion=0 <1.2.21
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
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Technologies
Your stack
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Your stack
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