CVE-2016-4437
What it is
Apache Shiro before 1.2.5, when a cipher key has not been configured for the "remember me" feature, allows remote attackers to execute arbitrary code or bypass intended access restrictions via an unspecified request parameter.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- In the wild
- CISA lists this as exploited in real attacks. Treat as urgent.
- Fix
- No patch or advisory is linked yet. Look at mitigations or restrict exposure.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- 2021-11-03 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
- 2022-05-03 Remediation deadlineCISA's due date for federal agencies to fix it
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
- Exploit odds: 93.0% in the next 30 days (EPSS).
- Severity: 9.8 CRITICAL (CVSS).
- Fix: none linked yet, which raises it.
- It meets the bar for Drop everything: critical, and exploited or very likely to be.
Details
- Published
- Last modified
- Added to CISA KEV
- 2021-11-03
- Exploit probability
- 93.0% · EPSS, next 30 days
- Weakness
- CWE-321
- Record status
- Analyzed
Affected
- Apache Aurora < 0.18.1
- Apache Shiro < 1.2.5
- Redhat Fuse 1.0
- Redhat Jboss Middleware text-only Advisories 1.0
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2016-4437.md and follow it. Check whether this project is affected by CVE-2016-4437. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
References
- http://packetstormsecurity.com/files/137310/Apache-Shiro-1.2.4-Information-Disclosure.html
- http://packetstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.html
- http://rhn.redhat.com/errata/RHSA-2016-2035.html
- http://rhn.redhat.com/errata/RHSA-2016-2036.html
- http://www.securityfocus.com/archive/1/538570/100/0/threaded
- http://www.securityfocus.com/bid/91024
- https://lists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4%40%3Cannouncements.aurora.apache.org%3E
- http://packetstormsecurity.com/files/137310/Apache-Shiro-1.2.4-Information-Disclosure.html
- http://packetstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.html
- http://rhn.redhat.com/errata/RHSA-2016-2035.html
- http://rhn.redhat.com/errata/RHSA-2016-2036.html
- http://www.securityfocus.com/archive/1/538570/100/0/threaded
- http://www.securityfocus.com/bid/91024
- https://lists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4%40%3Cannouncements.aurora.apache.org%3E
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4437