Detections
Analytics
Alpine: multiple shadow packages: security update to 4.13-r4
low Tenable Cloud Security Plugin ID 426808
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn
(change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails
because \n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of
\r manipulations and Unicode characters to work around blocking of the : character make it possible to
give the impression that a new user has been added. In other words, an adversary may be able to convince a
system administrator to take the system offline (an indirect, social-engineered denial of service) by
demonstrating that "cat /etc/passwd" shows a rogue user account. (CVE-2023-29383)
See Also
Plugin Details
Severity: Low
ID: 426808
Version: Revision 1.6
Type: Local
Published: 5/16/2025
Updated: 11/7/2025
Supported Sensors: Agentless Assessment
Risk Information
VPR
Risk Factor: Low
Score: 1.2
Percentile: 0.01
CVSS v2
Risk Factor: Low
Base Score: 1.7
Temporal Score: 1.3
Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:P/A:N
CVSS Score Source: CVE-2023-29383
CVSS v3
Risk Factor: Low
Base Score: 3.3
Temporal Score: 3
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Vulnerability Publication Date: 4/14/2023
Reference Information
CVE: CVE-2023-29383