CVE-2023-37475
Last modified
CVE-2023-37475 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Hamba avro is a go lang encoder/decoder implementation of the avro codec specification. In affected versions a well-crafted string passed to avro's `github.com/hamba/avro/v2.Unmarshal()` can throw a `fatal error: runtime: out of memory` which is unrecoverable and can cause denial of service of the consumer of avro. EPSS estimates a 0.80% chance of exploitation in the next 30 days.
Description
Hamba avro is a go lang encoder/decoder implementation of the avro codec specification. In affected versions a well-crafted string passed to avro's `github.com/hamba/avro/v2.Unmarshal()` can throw a `fatal error: runtime: out of memory` which is unrecoverable and can cause denial of service of the consumer of avro. The root cause of the issue is that avro uses part of the input to `Unmarshal()` to determine the size when creating a new slice and hence an attacker may consume arbitrary amounts of memory which in turn may cause the application to crash. This issue has been addressed in commit `b4a402f4` which has been included in release version `2.13.0`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Avro Project | Avro | < 2.13.0 |
References
- https://github.com/hamba/avro/security/advisories/GHSA-9x44-9pgq-cf45Exploit, Vendor Advisory
- https://github.com/hamba/avro/security/advisories/GHSA-9x44-9pgq-cf45Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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