Detections
Analytics
Rocky Linux 8 [CIQ] Security Update: Cython-debugsource / PyYAML-debugsource / numpy-debugsource / etc Multiple Vulnerabilities (crlsa-2020_4641)
critical Nessus Plugin ID 357637
Synopsis
The Rocky Linux host is missing one or more security updates.Description
The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2020_4641 advisory.* PyYAML: command execution through python/object/apply constructor in FullLoader (CVE-2019-20477)
* python: infinite loop in the tarfile module via crafted TAR archive (CVE-2019-20907)
* PyYAML: arbitrary command execution through python/object/new when FullLoader is used (CVE-2020-1747)
* python: wrong backtracking in urllib.request.AbstractBasicAuthHandler allows for a ReDoS (CVE-2020-8492)
* python: DoS via inefficiency in IPv{4,6}Interface classes (CVE-2020-14422)
Tenable has extracted the preceding description block directly from the CIQ security advisory.
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 based on the guidance in CIQ advisory crlsa-2020_4641.See Also
https://access.redhat.com/errata/RHSA-2020:4641
https://bugzilla.redhat.com/show_bug.cgi?id=1806005
https://bugzilla.redhat.com/show_bug.cgi?id=1807367
https://bugzilla.redhat.com/show_bug.cgi?id=1809065
https://bugzilla.redhat.com/show_bug.cgi?id=1815643
https://bugzilla.redhat.com/show_bug.cgi?id=1847416
https://bugzilla.redhat.com/show_bug.cgi?id=1854926
https://bugzilla.redhat.com/show_bug.cgi?id=1856481
https://errata.build.resf.org/RLSA-2020:4641
Plugin Details
Severity: Critical
ID: 357637
File Name: ciq_rocky_linux_8_crlsa-2020_4641.nasl
Version: 1.1
Type: Local
Published: 10/1/2026
Updated: 10/1/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.9
Percentile: 96.95
Vendor
Vendor Severity: Unknown
CVSS v2
Risk Factor: Critical
Base Score: 10
Temporal Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2020-1747
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: Critical
Base Score: 9.3
Threat Score: 8.9
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/OS/extended-third-party
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/3/2020
Vulnerability Publication Date: 1/30/2020
Reference Information
CVE: CVE-2019-20477, CVE-2019-20907, CVE-2020-14422, CVE-2020-1747, CVE-2020-8492