CVE-2008-1845
HighSummary
Powłoka Korn (mksh) przed wersją R33d na MirOS (MirBSD) nie opróżnia I/O tty przy uruchamianiu mksh w nowym terminalu. Umożliwia to lokalnym użytkownikom uzyskanie uprawnień poprzez otwarcie wirtualnego terminala i wprowadzenie sekwencji poleceń, które mogą być później wykonane przez innego użytkownika uruchamiającego mksh z opcją -T.
Risk Assessment
Ryzyko polega na tym, że lokalni użytkownicy mogą uzyskać nieautoryzowane uprawnienia, co może prowadzić do niebezpiecznych działań w systemie. Potencjalne wykorzystanie tej podatności może zagrażać integralności i poufności danych.
Recommendation
Zaleca się aktualizację powłoki Korn do wersji R33d lub nowszej, aby usunąć tę podatność. Dodatkowo, warto ograniczyć dostęp do terminali w systemie oraz monitorować działania użytkowników.
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Original NVD description (English source)
The Korn shell (aka mksh) before R33d on MirOS (aka MirBSD) does not flush the tty's I/O when invoking mksh in a new terminal, which allows local users to gain privileges by opening a virtual terminal and entering command sequences, which might later be executed in opportunistic circumstances by a different user who launches mksh and specifies that terminal with the -T option.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

