CVE-2021-4104— Deserialization of untrusted data in JMSAppender in Apache Log4j 1.2
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I. Basic Information for CVE-2021-4104
Vulnerability Information
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Vulnerability Title
Deserialization of untrusted data in JMSAppender in Apache Log4j 1.2
Source: NVD (National Vulnerability Database)
Vulnerability Description
JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
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 1.2存在代码问题漏洞，攻击者可利用该漏洞通过JMSApender反序列化来运行代码。
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)
Shenlong Deep Dive — AI Deep Analysis
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Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Log4j 1.x | Apache Log4j 1.2 1.2.x | - |
II. Public POCs for CVE-2021-4104
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | log4j 1.x RCE Poc -- CVE-2021-4104 | https://github.com/cckuailong/log4shell_1.x | POC Details |
| 2 | Log4j version 1.2.17 without the offending class responsible for CVE-2021-4104. | https://github.com/open-AIMS/log4j | POC Details |
| 3 | Flexnet is susceptible to Log4j JNDI remote code execution. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/flexnet-log4j-rce.yaml | POC Details |
| 4 | None | https://github.com/cuijiung/log4j-CVE-2021-4104 | POC Details |
AI-Generated POCPremium
No public POC found.
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- https://www.kb.cert.org/vuls/id/930724third-party-advisory
- https://security.gentoo.org/glsa/202310-16vendor-advisory
- https://security.gentoo.org/glsa/202312-04vendor-advisory
- https://security.gentoo.org/glsa/202312-02vendor-advisory
- https://security.gentoo.org/glsa/202209-02vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2021-4104
Same Patch Batch · Apache Software Foundation · 2021-12-14 · 3 CVEs total
| CVE-2021-44549 | SMTPS server hostname not checked when making TLS connection to SMTPS server | |
| CVE-2021-45046 | Apache Log4j2 Thread Context Message Pattern and Context Lookup Pattern vulnerable to a de |
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