Detections
Analytics
Amazon Linux 2 : rpm (ALASMOCK2-2026-003)
high Nessus Plugin ID 377894
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of rpm installed on the remote host is prior to 4.14.3-4. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2MOCK2-2026-003 advisory.A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content -- of attacker-chosen length -- past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package. (CVE-2026-103242)
A flaw was found in rpm. An attacker can exploit a command injection vulnerability by influencing the path or filename of a tarball processed by `rpmbuild -t*` to include shell metacharacters. This is particularly relevant in automated build or continuous integration (CI) workflows that ingest externally supplied artifact names. Successful exploitation allows for arbitrary command execution with the privileges of the build user, which could lead to information disclosure or disruption of the build environment.
(CVE-2026-84837)
A flaw was found in rpm. An attacker can supply a crafted manifest file that, when processed by a user or automation using `rpm -q -p` or similar manifest-processing flows, leads to arbitrary code execution. This occurs because manifest entries are unexpectedly macro-expanded before being opened, allowing embedded shell commands to run with the privileges of the `rpm` process. Successful exploitation can lead to a full compromise of confidentiality, integrity, and availability for the affected account. (CVE-2026-95519)
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 'yum update rpm' or or 'yum update --advisory ALAS2MOCK2-2026-003' to update your system.See Also
https://alas.aws.amazon.com//AL2/ALAS2MOCK2-2026-003.html
https://alas.aws.amazon.com/faqs.html
https://explore.alas.aws.amazon.com/CVE-2026-103242.html
Plugin Details
Severity: High
ID: 377894
File Name: al2_ALASMOCK2-2026-003.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 11/9/2026
Updated: 11/9/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.19
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2026-95519
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.8
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:python2-rpm, p-cpe:/a:amazon:linux:python3-rpm, p-cpe:/a:amazon:linux:rpm-apidocs, p-cpe:/a:amazon:linux:rpm-build-libs, p-cpe:/a:amazon:linux:rpm-build, p-cpe:/a:amazon:linux:rpm-cron, p-cpe:/a:amazon:linux:rpm-debuginfo, p-cpe:/a:amazon:linux:rpm-devel, p-cpe:/a:amazon:linux:rpm-libs, p-cpe:/a:amazon:linux:rpm-plugin-ima, p-cpe:/a:amazon:linux:rpm-plugin-prioreset, p-cpe:/a:amazon:linux:rpm-plugin-selinux, p-cpe:/a:amazon:linux:rpm-plugin-syslog, p-cpe:/a:amazon:linux:rpm-plugin-systemd-inhibit, p-cpe:/a:amazon:linux:rpm-sign, p-cpe:/a:amazon:linux:rpm
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 11/9/2026
Vulnerability Publication Date: 9/2/2026