CVE-2021-3100
HIGHCVSS 8.8/10EPSS 0.36%
Last modified
CVE-2021-3100 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The Apache Log4j hotpatch package before log4j-cve-2021-44228-hotpatch-1.1-13 didn’t mimic the permissions of the JVM being patched, allowing it to escalate privileges.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.
Description
The Apache Log4j hotpatch package before log4j-cve-2021-44228-hotpatch-1.1-13 didn’t mimic the permissions of the JVM being patched, allowing it to escalate privileges.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Amazon | Log4jhotpatch | < 1.1-13 |
References
- https://alas.aws.amazon.com/AL2/ALAS-2021-1732.htmlVendor Advisory
- https://alas.aws.amazon.com/ALAS-2021-1554.htmlVendor Advisory
- https://unit42.paloaltonetworks.com/aws-log4shell-hot-patch-vulnerabilitiesExploit, Third Party Advisory
- https://alas.aws.amazon.com/AL2/ALAS-2021-1732.htmlVendor Advisory
- https://alas.aws.amazon.com/ALAS-2021-1554.htmlVendor Advisory
- https://unit42.paloaltonetworks.com/aws-log4shell-hot-patch-vulnerabilitiesExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-3100?
The Apache Log4j hotpatch package before log4j-cve-2021-44228-hotpatch-1.1-13 didn’t mimic the permissions of the JVM being patched, allowing it to escalate privileges.
How severe is CVE-2021-3100?
CVE-2021-3100 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.
How do I fix CVE-2021-3100?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-30994An access issue was addressed with improved access restricti…3.3
- CVE-2021-30995A race condition was addressed with improved state handling.…7
- CVE-2021-30996A race condition was addressed with improved state handling.…7
- CVE-2021-30997A S/MIME issue existed in the handling of encrypted email. T…7.5
- CVE-2021-30998A S/MIME issue existed in the handling of encrypted email. T…5.3
- CVE-2021-30999The issue was addressed with improved permissions logic. Thi…4.3
- CVE-2021-31000A permissions issue was addressed with improved validation. …3.3
- CVE-2021-31001An access issue was addressed with improved access restricti…6.5
- CVE-2021-31002An out-of-bounds read was addressed with improved input vali…7.8
- CVE-2021-31003Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2021-31004A race condition was addressed with improved locking. This i…7
- CVE-2021-31005Description: A logic issue was addressed with improved state…7.5
Are you affected by CVE-2021-3100?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST