Detections
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Rocky Linux 8 : varnish:6 (RLSA-2020:4756)
high Nessus Plugin ID 184825
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-2020:4756 advisory.- An issue was discovered in Varnish Cache before 6.0.4 LTS, and 6.1.x and 6.2.x before 6.2.1. An HTTP/1 parsing failure allows a remote attacker to trigger an assert by sending crafted HTTP/1 requests. The assert will cause an automatic restart with a clean cache, which makes it a Denial of Service attack.
(CVE-2019-15892)
- An issue was discovered in Varnish Cache before 6.0.5 LTS, 6.1.x and 6.2.x before 6.2.2, and 6.3.x before 6.3.1. It does not clear a pointer between the handling of one client request and the next request within the same connection. This sometimes causes information to be disclosed from the connection workspace, such as data structures associated with previous requests within this connection or VCL-related temporary headers. (CVE-2019-20637)
- An issue was discovered in Varnish Cache before 6.0.6 LTS, 6.1.x and 6.2.x before 6.2.3, and 6.3.x before 6.3.2. It occurs when communication with a TLS termination proxy uses PROXY version 2. There can be an assertion failure and daemon restart, which causes a performance loss. (CVE-2020-11653)
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-2020:4756
https://bugzilla.redhat.com/show_bug.cgi?id=1756079
Plugin Details
Severity: High
ID: 184825
File Name: rocky_linux_RLSA-2020-4756.nasl
Version: 1.0
Type: local
Published: 11/7/2023
Updated: 11/7/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS Score Source: CVE-2019-20637
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:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:rocky:linux:varnish, p-cpe:/a:rocky:linux:varnish-devel, p-cpe:/a:rocky:linux:varnish-docs, p-cpe:/a:rocky:linux:varnish-modules, p-cpe:/a:rocky:linux:varnish-modules-debuginfo, p-cpe:/a:rocky:linux:varnish-modules-debugsource, 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: 11/3/2020
Vulnerability Publication Date: 9/3/2019