Included in Log4j 1.2, a logging library for Java, is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data.

For Debian 8 'Jessie', this problem has been fixed in version 1.2.17-5+deb8u1.

We recommend that you upgrade your apache-log4j1.2 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

It was discovered that the SocketServer class included in apache-log4j1.2, a logging library for java, is vulnerable to deserialization of untrusted data. An attacker can take advantage of this flaw to execute arbitrary code in the context of the logger application by sending a specially crafted log event.

The remote SUSE Linux SLES11 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2020:14267-1 advisory.

  - Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data     which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when     listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.
    (CVE-2019-17571)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of tested product installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the CPUApr2020 advisory.

  - A remote code execution vulnerability exists in the Log4j SocketServer class due to unsafe deserialization of     untrusted data. An unauthenticated, remote attacker can exploit this to remotely execute arbitrary code when     combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j     versions up to 1.2 up to 1.2.17. (CVE-2019-17571)

  - An information disclosure vulnerability exists in the Console component. An unauthenticated, remote attacker can     exploit this to gain unauthorized read access to a subset of Oracle WebLogic Server accessible data. (CVE-2020-2766)

  - A vulnerability in the WLS Web Services component exists. An authenticated, remote attacker can exploit this via T3     to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle     WebLogic Server. (CVE-2020-2798)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

An update for log4j is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Log4j is a tool to help the programmer output log statements to a variety of output targets.

Security Fix(es) :

* 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)

The remote Ubuntu 18.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4495-1 advisory.

  - Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data     which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when     listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.
    (CVE-2019-17571)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

An update for eap7-jboss-ec2-eap is now available for Red Hat JBoss Enterprise Application Platform 7.0 for Red Hat Enterprise Linux 6 and Red Hat JBoss Enterprise Application Platform 7.0 for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The eap7-jboss-ec2-eap packages provide scripts for Red Hat JBoss Enterprise Application Platform running on the Amazon Web Services (AWS) Elastic Compute Cloud (EC2).

With this update, the eap7-jboss-ec2-eap package has been updated to ensure compatibility with Red Hat JBoss Enterprise Application Platform 7.0.8.

Refer to the JBoss Enterprise Application Platform 7.0.8 Release Notes, linked to in the References section, for information on the most significant bug fixes and enhancements included in this release.

Security Fix(es) :

* 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)

* A vulnerability was found in Jasypt that would allow an attacker to perform a timing attack on password hash comparison. (CVE-2014-9970)

* It was found that an information disclosure flaw in Bouncy Castle could enable a local malicious application to gain access to user's private information. (CVE-2015-6644)

* It was found that while parsing the SAML messages the StaxParserUtil class of Picketlink replaces special strings for obtaining attribute values with system property. This could allow an attacker to determine values of system properties at the attacked system by formatting the SAML request ID field to be the chosen system property which could be obtained in the 'InResponseTo' field in the response. (CVE-2017-2582)

* It was found that when the security manager's reflective permissions, which allows it to access the private members of the class, are granted to Hibernate Validator, a potential privilege escalation can occur. By allowing the calling code to access those private members without the permission an attacker may be able to validate an invalid instance and access the private member value via ConstraintViolation#getInvalidValue(). (CVE-2017-7536)

The CVE-2017-2582 issue was discovered by Hynek Mlnarik (Red Hat) and the CVE-2017-7536 issue was discovered by Gunnar Morling (Red Hat).

An update is now available for Red Hat JBoss Enterprise Application Platform 5 for Red Hat Enterprise Linux 5 and Red Hat JBoss Enterprise Application Platform 5 for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Red Hat JBoss Enterprise Application Platform is a platform for Java applications based on the JBoss Application Server.

This asynchronous patch is a security update for log4j package in Red Hat JBoss Enterprise Application Platform 5.2.0.

Security Fix(es) :

* 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)

An update is now available for Red Hat JBoss Web Server 3.1 for RHEL 6 and Red Hat JBoss Web Server 3.1 for RHEL 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector (mod_jk), JBoss HTTP Connector (mod_cluster), Hibernate, and the Tomcat Native library.

This release of Red Hat JBoss Web Server 3.1 Service Pack 1 serves as a replacement for Red Hat JBoss Web Server 3.1, and includes bug fixes, which are documented in the Release Notes document linked to in the References.

Security Fix(es) :

* 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)

* A vulnerability was discovered in tomcat's handling of pipelined requests when 'Sendfile' was used. If sendfile processing completed quickly, it was possible for the Processor to be added to the processor cache twice. This could lead to invalid responses or information disclosure. (CVE-2017-5647)

* A vulnerability was discovered in the error page mechanism in Tomcat's DefaultServlet implementation. A crafted HTTP request could cause undesired side effects, possibly including the removal or replacement of the custom error page. (CVE-2017-5664)

* A vulnerability was discovered in tomcat. When running an untrusted application under a SecurityManager it was possible, under some circumstances, for that application to retain references to the request or response objects and thereby access and/or modify information associated with another web application. (CVE-2017-5648)

From Red Hat Security Advisory 2017:2423 :

An update for log4j is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Log4j is a tool to help the programmer output log statements to a variety of output targets.

Security Fix(es) :

* 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)

An update for jboss-ec2-eap is now available for Red Hat JBoss Enterprise Application Platform 6.4 for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The jboss-ec2-eap packages provide scripts for Red Hat JBoss Enterprise Application Platform running on the Amazon Web Services (AWS) Elastic Compute Cloud (EC2).

With this update, the jboss-ec2-eap package has been updated to ensure compatibility with Red Hat JBoss Enterprise Application Platform 6.4.17.

Security Fix(es) :

* 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)

* A vulnerability was discovered in the error page mechanism in Tomcat's DefaultServlet implementation. A crafted HTTP request could cause undesired side effects, possibly including the removal or replacement of the custom error page. (CVE-2017-5664)

* A deserialization flaw was discovered in the jackson-databind which could allow an unauthenticated user to perform code execution by sending the maliciously crafted input to the readValue method of the ObjectMapper. (CVE-2017-7525)

Red Hat would like to thank Liao Xinxi (NSFOCUS) for reporting CVE-2017-7525.

This update for log4j fixes the following issues :

  - CVE-2019-17571: Fixed a remote code execution by     deserialization of untrusted data in SocketServer     (bsc#1159646).

This update was imported from the SUSE:SLE-15:Update update project.

ID	Name	Product	Family	Published	Updated	Severity
132777	Debian DLA-2065-1 : apache-log4j1.2 security update	Nessus	Debian Local Security Checks	1/13/2020	1/11/2021	critical
136675	Debian DSA-4686-1 : apache-log4j1.2 - security update	Nessus	Debian Local Security Checks	5/18/2020	5/21/2020	critical
150590	SUSE SLES11 Security Update : log4j (SUSE-SU-2020:14267-1)	Nessus	SuSE Local Security Checks	6/10/2021	6/10/2021	critical
135680	Oracle WebLogic Server Multiple Vulnerabilities (Apr 2020 CPU)	Nessus	Misc.	4/16/2020	8/17/2020	critical
102348	RHEL 7 : log4j (RHSA-2017:2423)	Nessus	Red Hat Local Security Checks	8/10/2017	5/8/2020	critical
102878	CentOS 7 : log4j (CESA-2017:2423)	Nessus	CentOS Local Security Checks	9/1/2017	1/4/2021	critical
140591	Ubuntu 18.04 LTS : Apache Log4j vulnerability (USN-4495-1)	Nessus	Ubuntu Local Security Checks	9/15/2020	11/24/2020	critical
103500	RHEL 6 / 7 : eap7-jboss-ec2-eap (RHSA-2017:2811)	Nessus	Red Hat Local Security Checks	9/27/2017	5/8/2020	critical
105209	RHEL 6 : JBoss EAP (RHSA-2017:3399)	Nessus	Red Hat Local Security Checks	12/13/2017	5/8/2020	critical
112177	RHEL 6 / 7 : Red Hat JBoss Web Server 3.1.0 Service Pack 1 (RHSA-2017:1801)	Nessus	Red Hat Local Security Checks	8/29/2018	5/8/2020	critical
102345	Oracle Linux 7 : log4j (ELSA-2017-2423)	Nessus	Oracle Linux Local Security Checks	8/10/2017	1/14/2021	critical
103044	RHEL 6 : jboss-ec2-eap (RHSA-2017:2638)	Nessus	Red Hat Local Security Checks	9/8/2017	5/8/2020	critical
132915	openSUSE Security Update : log4j (openSUSE-2020-51)	Nessus	SuSE Local Security Checks	1/15/2020	1/17/2020	critical

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