ID

VAR-201704-1589

CVE

CVE-2017-5645

TITLE

Apache Log4j CVE-2017-5645 Remote Code Execution Vulnerability

DESCRIPTION

In Apache Log4j 2.x before 2.8.2, when using the TCP socket server or UDP socket server to receive serialized log events from another application, a specially crafted binary payload can be sent that, when deserialized, can execute arbitrary code. Apache Log4j is prone to remote code-execution vulnerability. Successfully exploiting this issue allows attackers to execute arbitrary code in the context of the affected application. Failed exploits will result in denial-of-service conditions. Apache Log4j 2.0-alpha1 through 2.8.1 are vulnerable. Apache Log4j is a Java-based open source logging tool developed by the Apache Software Foundation. The References section of this erratum contains a download link (you must log in to download the update). Description: Red Hat JBoss BPM Suite is a business rules and processes management system for the management, storage, creation, modification, and deployment of JBoss rules and BPMN2-compliant business processes. (CVE-2017-5645) * It was found that XStream contains a vulnerability that allows a maliciously crafted file to be parsed successfully which could cause an application crash. The crash occurs if the file that is being fed into XStream input stream contains an instances of the primitive type 'void'. An attacker could use this flaw to create a denial of service on the target system. (CVE-2017-7957) 3. It is recommended to halt the server by stopping the JBoss Application Server process before installing this update; after installing the update, restart the server by starting the JBoss Application Server process. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: log4j security update Advisory ID: RHSA-2017:2423-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2423 Issue date: 2017-08-07 CVE Names: CVE-2017-5645 ===================================================================== 1. Summary: 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - noarch Red Hat Enterprise Linux Client Optional (v. 7) - noarch Red Hat Enterprise Linux ComputeNode (v. 7) - noarch Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch Red Hat Enterprise Linux Server (v. 7) - noarch Red Hat Enterprise Linux Server Optional (v. 7) - noarch Red Hat Enterprise Linux Workstation (v. 7) - noarch Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch 3. Description: Log4j is a tool to help the programmer output log statements to a variety of output targets. (CVE-2017-5645) 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1443635 - CVE-2017-5645 log4j: Socket receiver deserialization vulnerability 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: log4j-1.2.17-16.el7_4.src.rpm noarch: log4j-1.2.17-16.el7_4.noarch.rpm Red Hat Enterprise Linux Client Optional (v. 7): noarch: log4j-javadoc-1.2.17-16.el7_4.noarch.rpm log4j-manual-1.2.17-16.el7_4.noarch.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: log4j-1.2.17-16.el7_4.src.rpm noarch: log4j-1.2.17-16.el7_4.noarch.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): noarch: log4j-javadoc-1.2.17-16.el7_4.noarch.rpm log4j-manual-1.2.17-16.el7_4.noarch.rpm Red Hat Enterprise Linux Server (v. 7): Source: log4j-1.2.17-16.el7_4.src.rpm noarch: log4j-1.2.17-16.el7_4.noarch.rpm Red Hat Enterprise Linux Server Optional (v. 7): noarch: log4j-javadoc-1.2.17-16.el7_4.noarch.rpm log4j-manual-1.2.17-16.el7_4.noarch.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: log4j-1.2.17-16.el7_4.src.rpm noarch: log4j-1.2.17-16.el7_4.noarch.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): noarch: log4j-javadoc-1.2.17-16.el7_4.noarch.rpm log4j-manual-1.2.17-16.el7_4.noarch.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2017-5645 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFZiCjVXlSAg2UNWIIRAgugAKCX6snTYMAdTmkK1uQ86MGQhkv7ugCdFILV uCPrjfU5EG2L7kIu/w1uCSA= =Fxz+ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Description: 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). 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. (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(). Bugs fixed (https://bugzilla.redhat.com/): 1410481 - CVE-2017-2582 picketlink, keycloak: SAML request parser replaces special strings with system properties 1443635 - CVE-2017-5645 log4j: Socket receiver deserialization vulnerability 1444015 - CVE-2015-6644 bouncycastle: Information disclosure in GCMBlockCipher 1455566 - CVE-2014-9970 jasypt: Vulnerable to timing attack against the password hash comparison 1465573 - CVE-2017-7536 hibernate-validator: Privilege escalation when running under the security manager 6. JIRA issues fixed (https://issues.jboss.org/): JBEAP-11487 - jboss-ec2-eap for EAP 7.0.8 7. (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-2017-7525) Red Hat would like to thank Liao Xinxi (NSFOCUS) for reporting CVE-2017-7525

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

arbitrary

EXTERNAL IDS

REFERENCES