5.9
Medium
CVE-2017-2624 It was found that xorg-x11-server before 1.19.0 including uses memcmp() to check the received MIT cookie against 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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| xorg-x11-server | 1.19.0 | No fix stated |
References
- GLSA-201704-03 security.gentoo.org
- gitlab.freedesktop.org gitlab.freedesktop.org
- 1037919 www.securitytracker.com
- [debian-lts-announce] 20171122 [SECURITY] [DLA 1186-1] xorg-server security update lists.debian.org
- GLSA-201710-30 security.gentoo.org
- 96480 www.securityfocus.com
- www.x41-dsec.de www.x41-dsec.de
- bugzilla.redhat.com bugzilla.redhat.com
Timeline
- Published
- Last modified