CVE-2019-9686

Sažetak

pacman before 5.1.3 allows directory traversal when installing a remote package via a specified URL "pacman -U <url>" due to an unsanitized file name received from a Content-Disposition header. pacman renames the downloaded package file to match the name given in this header. However, pacman did not sanitize this name, which may contain slashes, before calling rename(). A malicious server (or a network MitM if downloading over HTTP) can send a Content-Disposition header to make pacman place the file anywhere in the filesystem, potentially leading to arbitrary root code execution. Notably, this bypasses pacman's package signature checking. This occurs in curl_download_internal in lib/libalpm/dload.c.

Reference

CVSS

Base:	9.3
Impact:	10.0
Exploitability:	8.6

Pristup

Vektor	Složenost	Autentikacija
NETWORK	MEDIUM	NONE

Impact

Povjerljivost	Cjelovitost	Dostupnost
COMPLETE	COMPLETE	COMPLETE

CVSS vektor

AV:N/AC:M/Au:N/C:C/I:C/A:C

Zadnje važnije ažuriranje

09-11-2020 - 21:45

Objavljeno

11-03-2019 - 16:29