Detections
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Rocky Linux 8 : nginx:1.14 (RLSA-2019:2799)
high Nessus Plugin ID 184596
Synopsis
The remote Rocky Linux host is missing one or more security updates.Description
The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2019:2799 advisory.- 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 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 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 Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
https://errata.rockylinux.org/RLSA-2019:2799
https://bugzilla.redhat.com/show_bug.cgi?id=1735741
Plugin Details
Severity: High
ID: 184596
File Name: rocky_linux_RLSA-2019-2799.nasl
Version: 1.1
Type: local
Published: 11/6/2023
Updated: 11/7/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2019-9513
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:rocky:linux:nginx, p-cpe:/a:rocky:linux:nginx-all-modules, p-cpe:/a:rocky:linux:nginx-debuginfo, p-cpe:/a:rocky:linux:nginx-debugsource, p-cpe:/a:rocky:linux:nginx-filesystem, p-cpe:/a:rocky:linux:nginx-mod-http-image-filter, p-cpe:/a:rocky:linux:nginx-mod-http-image-filter-debuginfo, p-cpe:/a:rocky:linux:nginx-mod-http-perl, p-cpe:/a:rocky:linux:nginx-mod-http-perl-debuginfo, p-cpe:/a:rocky:linux:nginx-mod-http-xslt-filter, p-cpe:/a:rocky:linux:nginx-mod-http-xslt-filter-debuginfo, p-cpe:/a:rocky:linux:nginx-mod-mail, p-cpe:/a:rocky:linux:nginx-mod-mail-debuginfo, p-cpe:/a:rocky:linux:nginx-mod-stream, p-cpe:/a:rocky:linux:nginx-mod-stream-debuginfo, cpe:/o:rocky:linux:8
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 9/17/2019
Vulnerability Publication Date: 8/9/2019