CVE-2021-4104
apache-log4j1.2 - security update
7.5
HIGH
CVSS 3.1
EPSS 81.1%
描述
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.
如何修補 CVE-2021-4104
要修補 CVE-2021-4104,請將受影響套件升級到下列已修補版本。
- —升級至 1.2.17-10+deb11u1 或更新版本
- —升級至 1.2.17-7+deb9u2 或更新版本
- —未列出修補版本
- —未列出修補版本
CVE-2021-4104 正在被利用嗎?
可能 — EPSS 為 81.1%,屬於高被利用機率區間,建議優先修補。
受影響套件(4)
- from 0, < 1.2.17-10+deb11u1
- from 0, < 1.2.17-7+deb9u2
- >= 1.2.0, <= 1.2.17
- from 0, <= 2.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |