GHSA-mf4f-j588-5xm8 Apache Log4j Remote Code Execution
Attackers can execute arbitrary code remotely by controlling log messages in applications using vulnerable Log4j2 versions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-mf4f-j588-5xm8?
GHSA-mf4f-j588-5xm8 is a code injection vulnerability in org.opencastproject:opencast-common, published on 14 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Impact
Opencast uses an Apache Log4j2 version which, combined with older JDK versions, can be used for remote code execution attacks which have been found to be actively exploited.
Apache Log4j2 <=2.14.1 JNDI features is not sufficiently protected. An attacker who can control log messages or log message parameters can execute arbitrary code when message lookup substitution is enabled.
Who is affected
- Opencast before 9.10 or 10.6 are affected
- Log4j version: all 2.x versions before 2.15.0 are affected
Patches
The issue has been fixed in Opencast 9.10 and 10.6.
Workarounds
The vulnerability can be mitigated by setting system property log4j2.formatMsgNoLookups to true.
References
- Opencast pull request mitigating the vulnerability
- CVE-2021-44228 Detail
- Analysis and Remediation Guidance to the Log4j Zero-Day RCE (CVE-2021-44228) Vulnerability
- VE-2021-44228 – Log4j 2 Vulnerability Analysis
For more information
If you have any questions or comments about this advisory:
- Open an issue in our issue tracker
- Email us at [email protected]
Note about dependencies
This issue affects many Java applications. Please also verify these are not vulnerable.
Which versions are affected by GHSA-mf4f-j588-5xm8?
4 open source packages ship an affected version, including org.opencastproject:opencast-common.
| Package | Affected | Fixed in |
|---|---|---|
org.opencastproject:opencast-common Maven | All versions | 9.10 |
org.opencastproject:opencast-common Maven | All versions | 9.10 |
org.opencastproject:opencast-common Maven | From 10.0 | 10.6 |
org.opencastproject:opencast-common Maven | From 10.0 | 10.6 |
How do I fix GHSA-mf4f-j588-5xm8?
Upgrade org.opencastproject:opencast-common to a fixed version for your release line: 9.10 or 10.6.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is GHSA-mf4f-j588-5xm8 being exploited?
There is no known exploitation of GHSA-mf4f-j588-5xm8 in the wild and no public exploit code.