Deserialization in Amazon Opensearch
CVE-2022-31115
opensearch-ruby is a community-driven, open source fork of elasticsearch-ruby. In versions prior to 2.0.1 the ruby `YAML.load` function was used instead of `YAML.safe_load`. As a result opensearch-ruby 2.0.0 and prior can lead to unsafe deserialization using YAML.load if the response is of type YAML. An attacker must be in control of an opensearch server and convince the victim to connect to it in order to exploit this vulnerability. The problem has been patched in opensearch-ruby gem version 2.0.1. Users are advised to upgrade. There are no known workarounds for this issue.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.016 (75.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: +0.000
Affected products
- Amazon Opensearch
- Opensearch-Project Opensearch-Ruby — versions < 2.0.1
Weakness classification (CWE)
References
- github.com/opensearch-project/opensearch-ruby/security/advisories/GHSA-977c-63x… (Third Party Advisory)
- github.com/opensearch-project/opensearch-ruby/pull/77 (Patch, Third Party Advisory)
- staaldraad.github.io/post/2021-01-09-universal-rce-ruby-yaml-load-updated/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-31115?
- CVE-2022-31115 is a high-severity vulnerability in Amazon Opensearch, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2022-06-30.
- How severe is CVE-2022-31115?
- High severity. CVSS v3 base score is 8.8 out of 10.