GHSA-p836-389h-j692 CVE-2016-4437
Improper Access Control in Apache Shiro
Critical
Known exploited
Maven
- Severity
- 9.8 / 10
- Critical · CVSS 3.1
- Exploit chance (EPSS)
- 93.04%
- Chance of exploitation in the next 30 days. Higher than 99.83% of scored vulnerabilities.
- Known exploited
- Yes
- In CISA's catalog since Nov 3, 2021
- Fix
1.2.5- Upgrade org.apache.shiro:shiro-core to this version or later
Exploited in the wild. Apache Shiro Code Execution Vulnerability (Apache Shiro). Required action: Apply updates per vendor instructions. Due for U.S. federal agencies by May 3, 2022.
Description
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.
Affected versions
Maven
| Package | Vulnerable | Fixed in |
|---|---|---|
| org.apache.shiro:shiro-core | <= 1.2.4 |
No fix yet |
| org.apache.shiro:shiro-core | < 1.2.5 |
1.2.5 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
org.apache.shiro:shiro-core Maven → 1.2.5
- maven
<dependency><groupId>org.apache.shiro</groupId><artifactId>shiro-core</artifactId><version>1.2.5</version></dependency>- gradle
implementation("org.apache.shiro:shiro-core:1.2.5")
Severity breakdown
CVSS 3.1 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
- Exploit maturity
- H
Weakness
CWE-284: Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
How to prevent it
- Architecture and Design, Operation: Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Architecture and Design: Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
CWE-321: Use of Hard-coded Cryptographic Key
The product uses a hard-coded, unchangeable cryptographic key.
How to prevent it
- Architecture and Design: Prevention schemes mirror that of hard-coded password storage.
References
Advisories
Other links
- lists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4…
- packetstormsecurity.com/files/137310/Apache-Shiro-1.2.4-Information-Disclosure.html
- packetstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.html
- rhn.redhat.com/errata/RHSA-2016-2035.html
- rhn.redhat.com/errata/RHSA-2016-2036.html
- securityfocus.com/archive/1/538570/100/0/threaded
- securityfocus.com/bid/91024
- lists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4…
- cisa.gov/known-exploited-vulnerabilities-catalog
Timeline
- Added to CISA's Known Exploited Vulnerabilities catalog
- Remediation due for U.S. federal agencies
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-8g5g-mxqh-grgj Vite: `server.fs.deny` bypassed with queries | Medium | Same weakness, CWE-284 |
| GHSA-rq7h-c2jc-7f22 Vite: Files outside `server.fs.allow` could be served when project paths match system paths on non-Windows machine | Medium | Same weakness, CWE-284 |
| GHSA-pjr3-86v4-5p7w Vikunja: Explicit lower-permission share on a sub-project is silently overridden by an inherited parent permission (broken access control / privilege-management regression in v2.6.0) | Medium | Same weakness, CWE-284 |
| GHSA-hmp2-4m7g-22cv Backstage: Scaffolder action input authorization bypass | High | Same weakness, CWE-284 |
| GHSA-fx49-4h83-wjv9 Payload didn't enforce field-level password update restrictions | High | Same weakness, CWE-284 |
| GHSA-fgmf-7rf8-m6vf ZITADEL: Actions V1 sandbox escape: host file read via require() | High | Same weakness, CWE-284 |
| GHSA-6rh5-qq4q-97xh vm2: NodeVM builtin denylist bypass via fs/promises despite -fs, allowing host filesystem writes | High | Same weakness, CWE-284 |
| GHSA-8686-vhfx-7r3j vm2: NodeVM node:-prefixed negative builtin deny bypass exposes child_process | Critical | Same weakness, CWE-284 |
MergeHarbor checks every repository's dependencies against this database, ranks what matters by exploitability and reachability, routes it to the owning team and opens the fix pull request.
Check your repos with MergeHarbor