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CVE-2017-2624

N/A

Description

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.

CVE Details

CVSS v3.1 ScoreN/A

Published7/27/2018

Last Modified8/29/2025

Sourcenvd

Honeypot Sightings0

Affected Products

debian:debian_linuxx.org:x_server

Weaknesses (CWE)

CWE-385CWE-200

References

http://www.securityfocus.com/bid/96480(secalert@redhat.com)

http://www.securitytracker.com/id/1037919(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2624(secalert@redhat.com)

https://gitlab.freedesktop.org/xorg/xserver/commit/d7ac755f0b618eb1259d93c8a16ec6e39a18627c(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html(secalert@redhat.com)

https://security.gentoo.org/glsa/201704-03(secalert@redhat.com)

https://security.gentoo.org/glsa/201710-30(secalert@redhat.com)

https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/(secalert@redhat.com)

http://www.securityfocus.com/bid/96480(af854a3a-2127-422b-91ae-364da2661108)

http://www.securitytracker.com/id/1037919(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2624(af854a3a-2127-422b-91ae-364da2661108)

https://gitlab.freedesktop.org/xorg/xserver/commit/d7ac755f0b618eb1259d93c8a16ec6e39a18627c(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2017/11/msg00032.html(af854a3a-2127-422b-91ae-364da2661108)

https://security.gentoo.org/glsa/201704-03(af854a3a-2127-422b-91ae-364da2661108)

https://security.gentoo.org/glsa/201710-30(af854a3a-2127-422b-91ae-364da2661108)

https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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