ID

VAR-201908-0266

CVE

CVE-2019-9516

TITLE

HTTP/2 implementations do not robustly handle abnormal traffic and resource exhaustion

DESCRIPTION

Some HTTP/2 implementations are vulnerable to a header leak, potentially leading to a denial of service. The attacker sends a stream of headers with a 0-length header name and 0-length header value, optionally Huffman encoded into 1-byte or greater headers. Some implementations allocate memory for these headers and keep the allocation alive until the session dies. This can consume excess memory. Multiple HTTP/2 implementations are vulnerable to a variety of denial-of-service (DoS) attacks. HTTP/2 is the second version of the hypertext transfer protocol, which is mainly used to ensure the communication between the client and the server. A resource management error vulnerability exists in HTTP/2. A vulnerability in the HTTP/2 implementation of Nginx could allow an unauthenticated, remote malicious user to cause a denial of service (DoS) condition on a targeted system. The vulnerability is due to improper parsing of zero length headers by the affected software that could lead to excessive CPU usage. An attacker could exploit this vulnerability by sending a request that submits malicious input to an affected system. A successful exploit could result in a DoS condition on the targeted system. nginx.org has confirmed the vulnerability and released software updates. For the oldstable distribution (stretch), these problems have been fixed in version 1.10.3-1+deb9u3. For the stable distribution (buster), these problems have been fixed in version 1.14.2-2+deb10u1. We recommend that you upgrade your nginx packages. Description: This release adds the new Apache HTTP Server 2.4.37 packages that are part of the JBoss Core Services offering. This release serves as a replacement for Red Hat JBoss Core Services Pack Apache Server 2.4.29 and includes bug fixes and enhancements. Refer to the Release Notes for information on the most significant bug fixes and enhancements included in this release. After installing the updated packages, the httpd daemon will be restarted automatically. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: rh-nginx110-nginx security update Advisory ID: RHSA-2019:2745-01 Product: Red Hat Software Collections Advisory URL: https://access.redhat.com/errata/RHSA-2019:2745 Issue date: 2019-09-12 CVE Names: CVE-2019-9511 CVE-2019-9513 CVE-2019-9516 ==================================================================== 1. Summary: An update for rh-nginx110-nginx is now available for Red Hat Software Collections. 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 Software Collections for Red Hat Enterprise Linux Server (v. 6) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. Security Fix(es): * HTTP/2: large amount of data request leads to denial of service (CVE-2019-9511) * HTTP/2: flood using PRIORITY frames resulting in excessive resource consumption (CVE-2019-9513) * HTTP/2: 0-length headers leads to denial of service (CVE-2019-9516) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 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 The rh-nginx110-nginx service must be restarted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1735741 - CVE-2019-9513 HTTP/2: flood using PRIORITY frames resulting in excessive resource consumption 1741860 - CVE-2019-9511 HTTP/2: large amount of data request leads to denial of service 1741864 - CVE-2019-9516 HTTP/2: 0-length headers leads to denial of service 6. Package List: Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6): Source: rh-nginx110-nginx-1.10.2-9.el6.1.src.rpm x86_64: rh-nginx110-nginx-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-debuginfo-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-http-image-filter-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-http-perl-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-http-xslt-filter-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-mail-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-stream-1.10.2-9.el6.1.x86_64.rpm Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6): Source: rh-nginx110-nginx-1.10.2-9.el6.1.src.rpm x86_64: rh-nginx110-nginx-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-debuginfo-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-http-image-filter-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-http-perl-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-http-xslt-filter-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-mail-1.10.2-9.el6.1.x86_64.rpm rh-nginx110-nginx-mod-stream-1.10.2-9.el6.1.x86_64.rpm Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7): Source: rh-nginx110-nginx-1.10.2-9.el7.1.src.rpm x86_64: rh-nginx110-nginx-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-debuginfo-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-image-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-perl-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-xslt-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-mail-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-stream-1.10.2-9.el7.1.x86_64.rpm Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4): Source: rh-nginx110-nginx-1.10.2-9.el7.1.src.rpm x86_64: rh-nginx110-nginx-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-debuginfo-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-image-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-perl-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-xslt-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-mail-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-stream-1.10.2-9.el7.1.x86_64.rpm Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5): Source: rh-nginx110-nginx-1.10.2-9.el7.1.src.rpm x86_64: rh-nginx110-nginx-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-debuginfo-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-image-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-perl-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-xslt-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-mail-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-stream-1.10.2-9.el7.1.x86_64.rpm Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6): Source: rh-nginx110-nginx-1.10.2-9.el7.1.src.rpm x86_64: rh-nginx110-nginx-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-debuginfo-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-image-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-perl-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-xslt-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-mail-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-stream-1.10.2-9.el7.1.x86_64.rpm Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7): Source: rh-nginx110-nginx-1.10.2-9.el7.1.src.rpm x86_64: rh-nginx110-nginx-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-debuginfo-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-image-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-perl-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-xslt-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-mail-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-stream-1.10.2-9.el7.1.x86_64.rpm Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7): Source: rh-nginx110-nginx-1.10.2-9.el7.1.src.rpm x86_64: rh-nginx110-nginx-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-debuginfo-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-image-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-perl-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-http-xslt-filter-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-mail-1.10.2-9.el7.1.x86_64.rpm rh-nginx110-nginx-mod-stream-1.10.2-9.el7.1.x86_64.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-2019-9511 https://access.redhat.com/security/cve/CVE-2019-9513 https://access.redhat.com/security/cve/CVE-2019-9516 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 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXXoyktzjgjWX9erEAQhqVxAApUw26k8XmcjEQM1gNlPgcNvj98eqGOxP vsQLEYCjMQuNtZdeZdgSGv1RLdIxK60CByHpOpy4HVa2cN96CLTDl+cRd2l5JyK2 mVCGTg6Iyin0Vp0gRLG8xwUZqiqfwRRmdvFaK2YD8sH3ykBAheg3udRBr11/l8X+ 4kBCmOttfl0ZTNe/VBi8j5l8bpSZm2W9Hw0gzdzFikI8ScPSOzZkmgRXT3LBCt2k rNGGNrrJLOC9jqwsNea6WXIpmTIdbtiAnL6V22adVjdBGkoJBxe79pqdgvJNYC14 ENl1NKX0UEidrYZ/PS6YtCnFNEpsONM43ZtHliEzMxYCnk/pQNAx4iArdf81tKG6 uglPwQlgaEJm+/2Nnlst07cABT9boYOUcGiKpQhzzs9QuABqJN1u2ZgTDmQkq9gU BGuV3ejUHRHlYuMyNNS/L9SLDAHptsCEzpEzr8Vl4T+m1ah9+AUeI+PqgO1n/1Nl Omt/g+f6ErlKMF2Jf8VkuYnLroqptZefYQJ1+mP9PhYYCh7jw3r00xi036SNeR/0 Elhvl6t48tYTZogIaOetCuJGgukluOPlYBJAlj2/pQjWlAWAYvvb5ha0fitXbDJR LF0KoJoT/6yZLD+XAuHkM9j7spA0iND1czI5j1Ay6R6DnsGAubJxdB4L0RRQ2U7X zMtgbVh8BNU=zH69 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . JIRA issues fixed (https://issues.jboss.org/): JBCS-826 - Rebase nghttp2 to 1.39.2 7. The purpose of this text-only errata is to inform you about the security issues fixed in this release. Installation instructions are available from the Fuse 7.6.0 product documentation page: https://access.redhat.com/documentation/en-us/red_hat_fuse/7.6/ 4. Bugs fixed (https://bugzilla.redhat.com/): 1399546 - CVE-2015-9251 js-jquery: Cross-site scripting via cross-domain ajax requests 1432858 - CVE-2017-5929 logback: Serialization vulnerability in SocketServer and ServerSocketReceiver 1591854 - CVE-2017-16012 js-jquery: XSS in responses from cross-origin ajax requests 1618573 - CVE-2018-11771 apache-commons-compress: ZipArchiveInputStream.read() fails to identify correct EOF allowing for DoS via crafted zip 1643043 - CVE-2018-15756 springframework: DoS Attack via Range Requests 1693777 - CVE-2019-3888 undertow: leak credentials to log files UndertowLogger.REQUEST_LOGGER.undertowRequestFailed 1703469 - CVE-2019-10174 infinispan: invokeAccessibly method from ReflectionUtil class allows to invoke private methods 1709860 - CVE-2019-5427 c3p0: loading XML configuration leads to denial of service 1713068 - CVE-2019-10184 undertow: Information leak in requests for directories without trailing slashes 1725795 - CVE-2019-12814 jackson-databind: polymorphic typing issue allows attacker to read arbitrary local files on the server via crafted JSON message. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 APPLE-SA-2019-08-13-5 SwiftNIO HTTP/2 1.5.0 SwiftNIO HTTP/2 1.5.0 is now available and addresses the following: SwiftNIO HTTP/2 Available for: SwiftNIO HTTP/2 1.0.0 through 1.4.0 on macOS Sierra 10.12 and later and Ubuntu 14.04 and later Impact: A HTTP/2 server may consume unbounded amounts of memory when receiving certain traffic patterns and eventually suffer resource exhaustion Description: This issue was addressed with improved buffer size management. CVE-2019-9512: Jonathan Looney of Netflix CVE-2019-9514: Jonathan Looney of Netflix CVE-2019-9515: Jonathan Looney of Netflix CVE-2019-9516: Jonathan Looney of Netflix SwiftNIO HTTP/2 Available for: SwiftNIO HTTP/2 1.0.0 through 1.4.0 on macOS Sierra 10.12 and later and Ubuntu 14.04 and later Impact: A HTTP/2 server may consume excessive CPU resources when receiving certain traffic patterns Description: This issue was addressed with improved input validation. CVE-2019-9518: Piotr Sikora of Google, Envoy Security Team Installation note: SwiftNIO HTTP/2 1.5.0 may be obtained via Swift Package Manager. Information will also be posted to the Apple Security Updates web site: https://support.apple.com/kb/HT201222 and https://github.com/apple/swift-nio-http2/releases/tag/1.5.0. Description: AMQ Broker is a high-performance messaging implementation based on ActiveMQ Artemis. It uses an asynchronous journal for fast message persistence, and supports multiple languages, protocols, and platforms. Solution: Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. The References section of this erratum contains a download link (you must log in to download the update). 7) - noarch, x86_64 3. Description: Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. The following packages have been upgraded to a later upstream version: rh-nodejs10-nodejs (10.16.3). 8) - aarch64, noarch, ppc64le, s390x, x86_64 3

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

resource management error

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2024-09-17T21:26:50.517000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE