PT-2023-6477 · Oracle+1 · Jre+1

Garrett Tucker · Published 2023-03-10 · Updated 2026-05-19 · CVE-2023-26464

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Apache Log4j versions prior to 2

Description The issue is related to the Chainsaw and SocketAppender components in Log4j 1.x when used with JRE less than 1.7. An attacker can cause a logging entry involving a specially-crafted hashmap or hashtable to be processed, potentially exhausting the available memory in the virtual machine and achieving Denial of Service when the object is deserialized.

Recommendations Update to Log4j 2.x to resolve the issue. As a temporary workaround, consider restricting the use of the Chainsaw and SocketAppender components until a patch is available. Avoid using deeply nested hashmaps or hashtables in logging entries to minimize the risk of exploitation.

Fix

DoS

Resource Exhaustion

Deserialization of Untrusted Data

Weakness Enumeration

CWE-400

CWE-502

Related Identifiers

BDU:2023-07207

CVE-2023-26464

GHSA-VP98-W2P3-MV35

RHSA-2023:3663

RHSA-2023:5484

RHSA-2023:5485

RHSA-2023:5486

RHSA-2024:10207

RHSA-2024:10208

ROSA-SA-2024-2519

Affected Products

Jre

Log4J

References · 19

• https://cve.org/CVERecord?id=CVE-2023-26464 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-26464 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-26464 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-26464 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-APP-MAVEN-CVE-2023-26464 · Vendor Advisory
• https://lists.apache.org/thread/wkx6grrcjkh86crr49p4blc1v1nflj3t · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-vp98-w2p3-mv35 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-26464 · Security Note
• https://bdu.fstec.ru/vul/2023-07207 · Security Note
• https://osv.dev/vulnerability/CVE-2023-26464 · Vendor Advisory
• https://github.com/apache/logging-log4j2 · Note
• https://security.netapp.com/advisory/ntap-20230505-0008 · Note
• https://t.me/cvenotify/99238 · Telegram Post
• https://twitter.com/MisterLousy/status/1861089730969977333 · Twitter Post
• https://abf.rosa.ru/advisories/ROSA-SA-2024-2519 · Note