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Oracle Linux: CVE-2018-14598: ELSA-2019-2079: Xorg security and bug fix update (MODERATE) (Multiple Advisories)

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Oracle Linux: CVE-2018-14598: ELSA-2019-2079: Xorg security and bug fix update (MODERATE) (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:H/Au:N/C:N/I:N/A:C)
Published
08/21/2018
Created
07/23/2020
Added
07/21/2020
Modified
07/22/2024

Description

An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed later on, leading to DoS (segmentation fault). It was discovered that libX11 does not properly validate input coming from the server, causing XListExtensions() and XGetFontPath() functions to produce an invalid list of elements that in turn make XFreeExtensionsList() and XFreeFontPath() access invalid memory. An attacker who can either configure a malicious X server or modify the data coming from one, could use this flaw to crash the application using libX11, resulting in a denial of service.

Solution(s)

  • oracle-linux-upgrade-gdm
  • oracle-linux-upgrade-gdm-devel
  • oracle-linux-upgrade-gdm-pam-extensions-devel
  • oracle-linux-upgrade-libx11
  • oracle-linux-upgrade-libx11-common
  • oracle-linux-upgrade-libx11-devel
  • oracle-linux-upgrade-libxkbcommon
  • oracle-linux-upgrade-libxkbcommon-devel
  • oracle-linux-upgrade-libxkbcommon-x11
  • oracle-linux-upgrade-libxkbcommon-x11-devel
  • oracle-linux-upgrade-mesa-libglw
  • oracle-linux-upgrade-mesa-libglw-devel
  • oracle-linux-upgrade-thunderbird
  • oracle-linux-upgrade-xorg-x11-drv-ati
  • oracle-linux-upgrade-xorg-x11-drv-vesa
  • oracle-linux-upgrade-xorg-x11-drv-wacom
  • oracle-linux-upgrade-xorg-x11-drv-wacom-devel
  • oracle-linux-upgrade-xorg-x11-server-common
  • oracle-linux-upgrade-xorg-x11-server-devel
  • oracle-linux-upgrade-xorg-x11-server-source
  • oracle-linux-upgrade-xorg-x11-server-xdmx
  • oracle-linux-upgrade-xorg-x11-server-xephyr
  • oracle-linux-upgrade-xorg-x11-server-xnest
  • oracle-linux-upgrade-xorg-x11-server-xorg
  • oracle-linux-upgrade-xorg-x11-server-xvfb
  • oracle-linux-upgrade-xorg-x11-server-xwayland

References

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