CVE-2023-26464

A flaw was found in Chainsaw and SocketAppender components with Log4j 1.x on JRE, less than 1.7. This issue may allow an attacker to use a logging entry with a specially-crafted hashmap or hashtable, depending on which logging component is in use, to process and exhaust the available memory in the virtual machine, resulting in a Denial of Service when the object is deserialized. This issue affects Apache Log4j before version 2.

Red Hat Enterprise Linux 8 and 9 security impacts have been reduced to Low as they do not enable the vulnerable JDK by default.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.