vulnerability
Gentoo Linux: CVE-2017-2624: X.Org: Multiple vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:M/Au:N/C:P/I:N/A:N) | Apr 10, 2017 | Oct 30, 2017 | Aug 13, 2025 |
Severity
2
CVSS
(AV:L/AC:M/Au:N/C:P/I:N/A:N)
Published
Apr 10, 2017
Added
Oct 30, 2017
Modified
Aug 13, 2025
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.
Solutions
gentoo-linux-upgrade-x11-base-xorg-servergentoo-linux-upgrade-x11-libs-libicegentoo-linux-upgrade-x11-libs-libxdmcpgentoo-linux-upgrade-x11-libs-libxfixesgentoo-linux-upgrade-x11-libs-libxigentoo-linux-upgrade-x11-libs-libxrandrgentoo-linux-upgrade-x11-libs-libxrendergentoo-linux-upgrade-x11-libs-libxv
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