漏洞类别：RedHat
漏洞等级： 
漏洞信息
Log4j is a tool to help the programmer output log statements to a variety of output targets.
It was found that when using remote logging with log4j socket server the log4j server would deserialize any log event received via TCP or UDP. An attacker could use this flaw to send a specially crafted log event that, during deserialization, would execute arbitrary code in the context of the logger application. (CVE-2017-5645)
Affected Products
Red Hat Enterprise Linux Server 7 x86_64
Red Hat Enterprise Linux Server - Extended Update Support 7.4 x86_64
Red Hat Enterprise Linux Server - AUS 7.4 x86_64
Red Hat Enterprise Linux Workstation 7 x86_64
Red Hat Enterprise Linux Desktop 7 x86_64
Red Hat Enterprise Linux for IBM z Systems 7 s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.4 s390x
Red Hat Enterprise Linux for Power, big endian 7 ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.4 ppc64
Red Hat Enterprise Linux for Scientific Computing 7 x86_64
Red Hat Enterprise Linux EUS Compute Node 7.4 x86_64
Red Hat Enterprise Linux for Power, little endian 7 ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.4 ppc64le
Red Hat Enterprise Linux Server for ARM 7 aarch64
Red Hat Enterprise Linux Server - TUS 7.4 x86_64
漏洞危害
An attacker could use this flaw to send a specially crafted log event that, during deserialization, would execute arbitrary code in the context of the logger application.
解决方案
Upgrade to the latest packages which contain a patch. Refer to Applying Package Updates to RHEL system for details.
Refer to Red Hat security advisory RHSA-2017:2423 to address this issue and obtain more information.
Patch:
Following are links for downloading patches to fix the vulnerabilities:
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