Auth bypass in Karlatemp Unsafeaccessor
CVE-2022-31139
UnsafeAccessor (UA) is a bridge to access jdk.internal.misc.Unsafe & sun.misc.Unsafe. Normally, if UA is loaded as a named module, the internal data of UA is protected by JVM and others can only access UA via UA's standard API. The main application can set up `SecurityCheck.AccessLimiter` for UA to limit access to UA. Starting with version 1.4.0 and prior to version 1.7.0, when `SecurityCheck.AccessLimiter` is set up, untrusted code can access UA without limitation, even when UA is loaded as a named module. This issue does not affect those for whom `SecurityCheck.AccessLimiter` is not set up. Version 1.7.0 contains a patch.
Vulnerability class: Information Disclosure
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:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.012 (66.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.012 · change: +0.001
Affected products
- Karlatemp Unsafeaccessor — versions >= 1.4.0, < 1.7.0
- Unsafe Accessor Project
Weakness classification (CWE)
References
- github.com/Karlatemp/UnsafeAccessor/security/advisories/GHSA-cr6p-23cf-w9g9 (Patch, Third Party Advisory)
- github.com/Karlatemp/UnsafeAccessor/commit/4ef83000184e8f13239a1ea2847ee401d815… (Patch, Third Party Advisory)
- github.com/Karlatemp/UnsafeAccessor/releases/tag/1.7.0 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2022-31139?
- CVE-2022-31139 is a medium-severity vulnerability in Karlatemp Unsafeaccessor, classified under Information Disclosure. CVSS score: 5.9/10. Published 2022-07-11.
- How severe is CVE-2022-31139?
- Medium severity. CVSS v3 base score is 5.9 out of 10.