Deserialization in Bdew Bdlib
CVE-2021-33806
The BDew BdLib library before 1.16.1.7 for Minecraft allows remote code execution because it deserializes untrusted data in ObjectInputStream.readObject as part of its use of Java serialization.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.030 (86.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.030 · newest: 0.030 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bdew.net (Release Notes, Vendor Advisory)
- www.curseforge.com/minecraft/mc-mods/bdlib/files/3331330 (Product, Third Party Advisory)
- vuln.ryotak.me/advisories/46 (Third Party Advisory)
- github.com/bdew-minecraft/bdlib/commit/447210530ceec72fb3374efecb0930ed359d2297 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33806?
- CVE-2021-33806 is a critical-severity vulnerability in Bdew Bdlib, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2021-06-03.
- How severe is CVE-2021-33806?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-33806 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.