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SUSE-SU-2023:2069-1

Опубликовано: 28 апр. 2023
Источник: suse-cvrf

Описание

Security update for shadow

This update for shadow fixes the following issues:

  • CVE-2023-29383: Fixed apparent /etc/shadow manipulation via chfn (bsc#1210507).

Список пакетов

Container suse/sles12sp4:latest
shadow-4.2.1-27.22.1
SUSE Linux Enterprise Server 12 SP2-BCL
shadow-4.2.1-27.22.1
SUSE Linux Enterprise Server 12 SP4-ESPOS
shadow-4.2.1-27.22.1
SUSE Linux Enterprise Server 12 SP4-LTSS
shadow-4.2.1-27.22.1
SUSE Linux Enterprise Server for SAP Applications 12 SP4
shadow-4.2.1-27.22.1
SUSE OpenStack Cloud 9
shadow-4.2.1-27.22.1
SUSE OpenStack Cloud Crowbar 9
shadow-4.2.1-27.22.1

Ссылки

Описание

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.

Затронутые продукты
Container suse/sles12sp4:latest:shadow-4.2.1-27.22.1
SUSE Linux Enterprise Server 12 SP2-BCL:shadow-4.2.1-27.22.1
SUSE Linux Enterprise Server 12 SP4-ESPOS:shadow-4.2.1-27.22.1
SUSE Linux Enterprise Server 12 SP4-LTSS:shadow-4.2.1-27.22.1
Ссылки