CVE-2017-2624: falha de média gravidade em xorg-x11-server
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.9epss 0.7%
It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against a series of valid cookies. If the cookie is correct, it is allowed to attach to the Xorg session. Since most memcmp() implementations return after an invalid byte is seen, this causes a time difference between a valid and invalid byte, which could allow an efficient brute force attack.
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Produtos afetados
Xorg · xorg-x11-serverReferências
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2624https://gitlab.freedesktop.org/xorg/xserver/commit/d7ac755f0b618eb1259d93c8a16ec6e39a18627chttps://lists.debian.org/debian-lts-announce/2017/11/msg00032.htmlhttps://security.gentoo.org/glsa/201704-03https://security.gentoo.org/glsa/201710-30https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/http://www.securityfocus.com/bid/96480http://www.securitytracker.com/id/1037919