Detections
Analytics
Amazon Linux 2 : emacs (ALAS-2023-1981)
critical Nessus Plugin ID 172158
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Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of emacs installed on the remote host is prior to 27.2-4. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-1981 advisory.GNU Emacs through 28.2 allows attackers to execute commands via shell metacharacters in the name of a source-code file, because lib-src/etags.c uses the system C library function in its implementation of the etags program. For example, a victim may use the etags -u * command (suggested in the etags documentation) in a situation where the current working directory has contents that depend on untrusted input. (CVE-2022-48337)
An issue was discovered in GNU Emacs through 28.2. In ruby-mode.el, the ruby-find-library-file function has a local command injection vulnerability. The ruby-find-library-file function is an interactive function, and bound to C-c C-f. Inside the function, the external command gem is called through shell- command-to-string, but the feature-name parameters are not escaped. Thus, malicious Ruby source files may cause commands to be executed. (CVE-2022-48338)
An issue was discovered in GNU Emacs through 28.2. htmlfontify.el has a command injection vulnerability.
In the hfy-istext-command function, the parameter file and parameter srcdir come from external input, and parameters are not escaped. If a file name or directory name contains shell metacharacters, code may be executed. (CVE-2022-48339)
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 emacs' to update your system.See Also
https://alas.aws.amazon.com/AL2/ALAS-2023-1981.html
https://alas.aws.amazon.com/cve/html/CVE-2022-48337.html
https://alas.aws.amazon.com/cve/html/CVE-2022-48338.html
Plugin Details
Severity: Critical
ID: 172158
File Name: al2_ALAS-2023-1981.nasl
Version: 1.1
Type: local
Agent: unix
Published: 3/7/2023
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: Critical
Base Score: 10
Temporal Score: 7.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2022-48337
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
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:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:emacs-debuginfo, p-cpe:/a:amazon:linux:emacs-filesystem, p-cpe:/a:amazon:linux:emacs, p-cpe:/a:amazon:linux:emacs-devel, p-cpe:/a:amazon:linux:emacs-common, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:emacs-terminal, p-cpe:/a:amazon:linux:emacs-nox, p-cpe:/a:amazon:linux:emacs-lucid
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 3/2/2023
Vulnerability Publication Date: 2/20/2023