Resource exhaustion in Typelevel Jawn
CVE-2022-21653
Jawn is an open source JSON parser. Extenders of the `org.typelevel.jawn.SimpleFacade` and `org.typelevel.jawn.MutableFacade` who don't override `objectContext()` are vulnerable to a hash collision attack which may result in a denial of service. Most applications do not implement these traits directly, but inherit from a library. `jawn-parser-1.3.1` fixes this issue and users are advised to upgrade. For users unable to upgrade override `objectContext()` to use a collision-safe collection.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Typelevel Jawn — versions < 1.3.2
Weakness classification (CWE)
References
- github.com/typelevel/jawn/security/advisories/GHSA-vc89-hccf-rq55 (Patch, Third Party Advisory)
- github.com/typelevel/jawn/pull/390 (Exploit, Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2022-21653?
- CVE-2022-21653 is a medium-severity vulnerability in Typelevel Jawn, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2022-01-05.
- How severe is CVE-2022-21653?
- Medium severity. CVSS v3 base score is 5.9 out of 10.