An update of the nginx package has been released.

Three vulnerabilities were discovered in Nginx, a high-performance web and reverse proxy server, which could result in denial of service in processing HTTP/2 (via excessive memory/CPU usage) or server memory disclosure in the ngx_http_mp4_module module (used for server-side MP4 streaming).

NGINX Team reports :

Two security issues were identified in nginx HTTP/2 implementation, which might cause excessive memory consumption (CVE-2018-16843) and CPU usage (CVE-2018-16844).

The issues affect nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.

A security issue was identified in the ngx_http_mp4_module, which might allow an attacker to cause infinite loop in a worker process, cause a worker process crash, or might result in worker process memory isclosure by using a specially crafted mp4 file (CVE-2018-16845).

The issue only affects nginx if it is built with the ngx_http_mp4_module (the module is not built by default) and the 'mp4' directive is used in the configuration file. Further, the attack is only possible if an attacker is able to trigger processing of a specially crafted mp4 file with the ngx_http_mp4_module.

According to the versions of the nginx package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - nginx before versions 1.15.6 and 1.14.1 has a     vulnerability in the implementation of HTTP/2 that can     allow for excessive memory consumption. This issue     affects nginx compiled with the ngx_http_v2_module (not     compiled by default) if the 'http2' option of the     'listen' directive is used in a configuration     file.(CVE-2018-16843)

  - nginx before versions 1.15.6 and 1.14.1 has a     vulnerability in the implementation of HTTP/2 that can     allow for excessive CPU usage. This issue affects nginx     compiled with the ngx_http_v2_module (not compiled by     default) if the 'http2' option of the 'listen'     directive is used in a configuration     file.(CVE-2018-16844)

  - An instance of missing input sanitization was found in     the mp4 module for nginx. A local attacker could create     a specially crafted video file that, when streamed by     the server, would cause a denial of service (server     crash or hang) and, possibly, information     disclosure.(CVE-2018-16845)

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

Security fix for CVE-2018-16843, CVE-2018-16844, CVE-2018-16845 + nginx rebase to 1.14.1.

----

New version 1.14.1

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive memory consumption. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file.
(CVE-2018-16843)

nginx before versions 1.15.6 and 1.14.1 has a vulnerability in the implementation of HTTP/2 that can allow for excessive CPU usage. This issue affects nginx compiled with the ngx_http_v2_module (not compiled by default) if the 'http2' option of the 'listen' directive is used in a configuration file. (CVE-2018-16844)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:3681 advisory.

  - nginx: Excessive memory consumption via flaw in HTTP/2 implementation (CVE-2018-16843)

  - nginx: Excessive CPU usage via flaw in HTTP/2 implementation (CVE-2018-16844)

  - nginx: Denial of service and memory disclosure via mp4 module (CVE-2018-16845)

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

This update for nginx fixes the following issues :

Security issues fixed :

  - CVE-2019-9511: Fixed a denial of service by manipulating     the window size and stream prioritization (bsc#1145579).

  - CVE-2019-9513: Fixed a denial of service caused by     resource loops (bsc#1145580).

  - CVE-2019-9516: Fixed a denial of service caused by     header leaks (bsc#1145582).

  - CVE-2018-16845: Fixed denial of service and memory     disclosure via mp4 module (bsc#1115015).

  - CVE-2018-16843: Fixed excessive memory consumption in     HTTP/2 implementation (bsc#1115022).

  - CVE-2018-16844: Fixed excessive CPU usage via flaw in     HTTP/2 implementation (bsc#1115025).

This update was imported from the SUSE:SLE-15-SP1:Update update project.

The installed version of nginx is 1.x prior to 1.14.1 or 1.15.x prior to 1.15.6.
It is, therefore, affected by the following issues:

  - An unspecified error exists related to the module     'ngx_http_v2_module' that allows excessive memory usage.
    (CVE-2018-16843)

  - An unspecified error exists related to the module     'ngx_http_v2_module' that allows excessive CPU usage.
    (CVE-2018-16844)

  - An unspecified error exists related to the module     'ngx_http_mp4_module' that allows worker process     crashes or memory disclosure. (CVE-2018-16845)

This update for nginx fixes the following issues :

Security issues fixed :

CVE-2019-9511: Fixed a denial of service by manipulating the window size and stream prioritization (bsc#1145579).

CVE-2019-9513: Fixed a denial of service caused by resource loops (bsc#1145580).

CVE-2019-9516: Fixed a denial of service caused by header leaks (bsc#1145582).

CVE-2018-16845: Fixed denial of service and memory disclosure via mp4 module (bsc#1115015).

CVE-2018-16843: Fixed excessive memory consumption in HTTP/2 implementation (bsc#1115022).

CVE-2018-16844: Fixed excessive CPU usage via flaw in HTTP/2 implementation (bsc#1115025).

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

According to the versions of the nginx packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - nginx before versions 1.15.6 and 1.14.1 has a     vulnerability in the implementation of HTTP/2 that can     allow for excessive memory consumption. This issue     affects nginx compiled with the ngx_http_v2_module (not     compiled by default) if the 'http2' option of the     'listen' directive is used in a configuration     file.(CVE-2018-16843)

  - nginx before versions 1.15.6 and 1.14.1 has a     vulnerability in the implementation of HTTP/2 that can     allow for excessive CPU usage. This issue affects nginx     compiled with the ngx_http_v2_module (not compiled by     default) if the 'http2' option of the 'listen'     directive is used in a configuration     file.(CVE-2018-16844)

  - Some HTTP/2 implementations are vulnerable to resource     loops, potentially leading to a denial of service. The     attacker creates multiple request streams and     continually shuffles the priority of the streams in a     way that causes substantial churn to the priority tree.
    This can consume excess CPU.(CVE-2019-9513)

  - Some HTTP/2 implementations are vulnerable to window     size manipulation and stream prioritization     manipulation, potentially leading to a denial of     service. The attacker requests a large amount of data     from a specified resource over multiple streams. They     manipulate window size and stream priority to force the     server to queue the data in 1-byte chunks. Depending on     how efficiently this data is queued, this can consume     excess CPU, memory, or both.(CVE-2019-9511)

  - 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.(CVE-2019-9516)

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
202802	Photon OS 3.0: Nginx PHSA-2019-3.0-0003	Nessus	PhotonOS Local Security Checks	2024/7/22	2024/7/24	high
118840	Debian DSA-4335-1 : nginx - security update	Nessus	Debian Local Security Checks	2018/11/9	2021/4/14	medium
118754	FreeBSD : NGINX -- Multiple vulnerabilities (84ca56be-e1de-11e8-bcfd-00e04c1ea73d)	Nessus	FreeBSD Local Security Checks	2018/11/7	2021/4/27	medium
119527	EulerOS 2.0 SP3 : nginx (EulerOS-SA-2018-1399)	Nessus	Huawei Local Security Checks	2018/12/10	2021/1/6	medium
120557	Fedora 29 : 1:nginx (2018-7c540fdab4)	Nessus	Fedora Local Security Checks	2019/1/3	2021/1/6	medium
119688	Amazon Linux AMI : nginx (ALAS-2018-1125)	Nessus	Amazon Linux Local Security Checks	2018/12/17	2024/7/16	high
194118	RHEL 7 : rh-nginx114-nginx (RHSA-2018:3681)	Nessus	Red Hat Local Security Checks	2024/4/27	2024/4/27	medium
128671	openSUSE Security Update : nginx (openSUSE-2019-2120) (0-Length Headers Leak) (Data Dribble) (Resource Loop)	Nessus	SuSE Local Security Checks	2019/9/11	2022/12/5	medium
118956	nginx 1.x < 1.14.1 / 1.15.x < 1.15.6 Multiple Vulnerabilities	Nessus	Web Servers	2018/11/14	2026/7/17	medium
128544	SUSE SLES15 Security Update : nginx (SUSE-SU-2019:2309-1) (0-Length Headers Leak) (Data Dribble) (Resource Loop)	Nessus	SuSE Local Security Checks	2019/9/6	2022/12/5	medium
129443	EulerOS 2.0 SP8 : nginx (EulerOS-SA-2019-2084)	Nessus	Huawei Local Security Checks	2019/9/30	2024/4/22	high

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