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Gentoo Linux: CVE-2017-2624: X.Org: Multiple vulnerabilities

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Gentoo Linux: CVE-2017-2624: X.Org: Multiple vulnerabilities

Severity
2
CVSS
(AV:L/AC:M/Au:N/C:P/I:N/A:N)
Published
04/10/2017
Created
07/25/2018
Added
10/30/2017
Modified
10/04/2018

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.

Solution(s)

  • gentoo-linux-upgrade-x11-base-xorg-server
  • gentoo-linux-upgrade-x11-libs-libice
  • gentoo-linux-upgrade-x11-libs-libxdmcp
  • gentoo-linux-upgrade-x11-libs-libxfixes
  • gentoo-linux-upgrade-x11-libs-libxi
  • gentoo-linux-upgrade-x11-libs-libxrandr
  • gentoo-linux-upgrade-x11-libs-libxrender
  • gentoo-linux-upgrade-x11-libs-libxv

References

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