Detections
Analytics
Amazon Linux 2023 : python3-rpm, rpm, rpm-apidocs (ALAS2023-2024-573)
medium Nessus Plugin ID 192453
Language:
Synopsis
The remote Amazon Linux 2023 host is missing a security update.Description
It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2024-573 advisory.A race condition vulnerability was found in rpm. A local unprivileged user could use this flaw to bypass the checks that were introduced in response to CVE-2017-7500 and CVE-2017-7501, potentially gaining root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-35937)
A symbolic link issue was found in rpm. It occurs when rpm sets the desired permissions and credentials after installing a file. A local unprivileged user could use this flaw to exchange the original file with a symbolic link to a security-critical file and escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
(CVE-2021-35938)
It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
This issue requires that the attacker have admin privileges on the target system, and be able to own and modify system files. Considering the tradeoff between the stability of Amazon Linux and the impact of CVE-2021-35939 a fix will not be provided for Amazon Linux 1, Amazon Linux 2 and Amazon Linux 2023 at this time. (CVE-2021-35939)
Tenable has extracted the preceding description block directly from the tested product 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
Run 'dnf update rpm --releasever 2023.4.20240319' to update your system.See Also
https://alas.aws.amazon.com/cve/html/CVE-2021-35939.html
https://alas.aws.amazon.com/faqs.html
https://alas.aws.amazon.com/AL2023/ALAS-2024-573.html
Plugin Details
Severity: Medium
ID: 192453
File Name: al2023_ALAS2023-2024-573.nasl
Version: 1.2
Type: local
Agent: unix
Published: 3/21/2024
Updated: 12/11/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.1
Vector: CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C
CVSS Score Source: CVE-2021-35939
CVSS v3
Risk Factor: Medium
Base Score: 6.7
Temporal Score: 6
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:rpm-debuginfo, p-cpe:/a:amazon:linux:rpm-plugin-audit-debuginfo, p-cpe:/a:amazon:linux:rpm-plugin-systemd-inhibit, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:rpm-plugin-ima-debuginfo, p-cpe:/a:amazon:linux:rpm-apidocs, p-cpe:/a:amazon:linux:rpm-sign-debuginfo, p-cpe:/a:amazon:linux:rpm-devel, p-cpe:/a:amazon:linux:rpm-plugin-audit, p-cpe:/a:amazon:linux:rpm-debugsource, p-cpe:/a:amazon:linux:python3-rpm, p-cpe:/a:amazon:linux:rpm-plugin-ima, p-cpe:/a:amazon:linux:rpm-sign, p-cpe:/a:amazon:linux:rpm-plugin-prioreset-debuginfo, p-cpe:/a:amazon:linux:rpm-plugin-fapolicyd, p-cpe:/a:amazon:linux:rpm-plugin-selinux, p-cpe:/a:amazon:linux:rpm-plugin-selinux-debuginfo, p-cpe:/a:amazon:linux:rpm-plugin-systemd-inhibit-debuginfo, p-cpe:/a:amazon:linux:rpm-libs, p-cpe:/a:amazon:linux:rpm-libs-debuginfo, p-cpe:/a:amazon:linux:rpm-plugin-prioreset, p-cpe:/a:amazon:linux:rpm-plugin-fapolicyd-debuginfo, p-cpe:/a:amazon:linux:rpm-plugin-syslog-debuginfo, p-cpe:/a:amazon:linux:rpm-devel-debuginfo, p-cpe:/a:amazon:linux:rpm-sign-libs, p-cpe:/a:amazon:linux:python3-rpm-debuginfo, p-cpe:/a:amazon:linux:rpm-build-libs, p-cpe:/a:amazon:linux:rpm-sign-libs-debuginfo, p-cpe:/a:amazon:linux:rpm-plugin-syslog, p-cpe:/a:amazon:linux:rpm-build, p-cpe:/a:amazon:linux:rpm-cron, p-cpe:/a:amazon:linux:rpm-build-debuginfo, p-cpe:/a:amazon:linux:rpm-build-libs-debuginfo, p-cpe:/a:amazon:linux:rpm
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 3/13/2024
Vulnerability Publication Date: 8/25/2022