Detections
Analytics
Oracle Linux 7 : Xorg (ELSA-2019-2079)
critical Nessus Plugin ID 180786
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Synopsis
The remote Oracle Linux host is missing one or more security updates.Description
The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-2079 advisory.- 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). (CVE-2018-14598)
- An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable to an off-by-one error caused by malicious server responses, leading to DoS or possibly unspecified other impact. (CVE-2018-14599)
- Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation. (CVE-2018-15853)
- Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because the XkbFile for an xkb_geometry section was mishandled. (CVE-2018-15855)
- An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes), leading to DoS or remote code execution. (CVE-2018-14600)
- Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because geometry tokens were desupported incorrectly. (CVE-2018-15854)
- An infinite loop when reaching EOL unexpectedly in compose/parser.c (aka the keymap parser) in xkbcommon before 0.8.1 could be used by local attackers to cause a denial of service during parsing of crafted keymap files. (CVE-2018-15856)
- Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because lookup failures are mishandled. (CVE-2018-15859)
- Unchecked NULL pointer usage in ResolveStateAndPredicate in xkbcomp/compat.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with a no-op modmask expression. (CVE-2018-15863)
- An invalid free in ExprAppendMultiKeysymList in xkbcomp/ast-build.c in xkbcommon before 0.8.1 could be used by local attackers to crash xkbcommon keymap parsers or possibly have unspecified other impact by supplying a crafted keymap file. (CVE-2018-15857)
- Unchecked NULL pointer usage in ExprResolveLhs in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file that triggers an xkb_intern_atom failure. (CVE-2018-15861)
- Unchecked NULL pointer usage in LookupModMask in xkbcomp/expr.c in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with invalid virtual modifiers. (CVE-2018-15862)
- Unchecked NULL pointer usage in resolve_keysym in xkbcomp/parser.y in xkbcommon before 0.8.2 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because a map access attempt can occur for a map that was never created. (CVE-2018-15864)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
Plugin Details
Severity: Critical
ID: 180786
File Name: oraclelinux_ELSA-2019-2079.nasl
Version: 1.0
Type: local
Agent: unix
Published: 9/7/2023
Updated: 9/7/2023
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2018-14600
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:gdm, p-cpe:/a:oracle:linux:gdm-devel, p-cpe:/a:oracle:linux:gdm-pam-extensions-devel, p-cpe:/a:oracle:linux:libx11, p-cpe:/a:oracle:linux:libx11-common, p-cpe:/a:oracle:linux:libx11-devel, p-cpe:/a:oracle:linux:libxkbcommon, p-cpe:/a:oracle:linux:libxkbcommon-devel, p-cpe:/a:oracle:linux:libxkbcommon-x11, p-cpe:/a:oracle:linux:libxkbcommon-x11-devel, p-cpe:/a:oracle:linux:mesa-libglw, p-cpe:/a:oracle:linux:mesa-libglw-devel, p-cpe:/a:oracle:linux:xorg-x11-drv-ati, p-cpe:/a:oracle:linux:xorg-x11-server-xdmx, p-cpe:/a:oracle:linux:xorg-x11-server-xephyr, p-cpe:/a:oracle:linux:xorg-x11-server-xnest, p-cpe:/a:oracle:linux:xorg-x11-server-xorg, p-cpe:/a:oracle:linux:xorg-x11-server-xvfb, p-cpe:/a:oracle:linux:xorg-x11-server-xwayland, p-cpe:/a:oracle:linux:xorg-x11-server-common, p-cpe:/a:oracle:linux:xorg-x11-server-devel, p-cpe:/a:oracle:linux:xorg-x11-server-source, p-cpe:/a:oracle:linux:xorg-x11-drv-vesa, p-cpe:/a:oracle:linux:xorg-x11-drv-wacom, p-cpe:/a:oracle:linux:xorg-x11-drv-wacom-devel
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux
Exploit Ease: No known exploits are available
Patch Publication Date: 8/13/2019
Vulnerability Publication Date: 8/21/2018
Reference Information
CVE: CVE-2018-14598, CVE-2018-14599, CVE-2018-14600, CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-15856, CVE-2018-15857, CVE-2018-15859, CVE-2018-15861, CVE-2018-15862, CVE-2018-15863, CVE-2018-15864