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CVE-2023-26464— Apache Log4j 1.x (EOL) allows DoS in Chainsaw and SocketAppender

Quick assessment

Affected
Apache Software Foundation Apache Log4j
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Log4j是美国阿帕奇（Apache）基金会的一款基于Java的开源日志记录工具。 Apache Log4j 1.x版本存在代码问题漏洞，该漏洞源于对特制的哈希图或哈希表进行处理可能会耗尽虚拟机中的可用内存，并在反序列化对象时导致拒绝服务。

AI Predicted 5.3 Difficulty: Moderate EPSS 1.91% · P79

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-26464

Vulnerability Information
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Vulnerability Title
Apache Log4j 1.x (EOL) allows DoS in Chainsaw and SocketAppender
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Log4j 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Log4j是美国阿帕奇（Apache）基金会的一款基于Java的开源日志记录工具。 Apache Log4j 1.x版本存在代码问题漏洞，该漏洞源于对特制的哈希图或哈希表进行处理可能会耗尽虚拟机中的可用内存，并在反序列化对象时导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Log4j 1.0.4 ~ 2 -

II. Public POCs for CVE-2023-26464

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III. Intelligence Information for CVE-2023-26464

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Vendor Advisories for CVE-2023-26464 (1)

Mailing List Discussions for CVE-2023-26464 (1)

IV. Related Vulnerabilities

Same product: Apache Log4j
Same vendor: Apache Software Foundation
Same weakness: CWE-502

V. Comments for CVE-2023-26464

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