CVE-2023-26464
Description
** UNSUPPORTED WHEN ASSIGNED ** When using the Chainsaw or SocketAppender components with Log4j 1.x on JRE less than 1.7, an attacker that manages to cause a logging entry involving a specially-crafted (ie, deeply nested) hashmap or hashtable (depending on which logging component is in use) to be processed could exhaust the available memory in the virtual machine and achieve Denial of Service when the object is deserialized. This issue affects Apache Log4j before 2. Affected users are recommended to update to Log4j 2.x. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
How to fix
- apache log4j2.0 or later
- org.apache.logging.log4j:log4j-core2.0 or later
- log4j:log4j2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache log4j | 1.0.4 ≤ v < 2.0 | 2.0 |
| org.apache.logging.log4j:log4j-coreMaven | 1.0.4 ≤ v < 2.0 | 2.0 |
| log4j:log4jMaven | 1.0.4 ≤ v < 2.0 | 2.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.