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openSUSE Security Update : libxkbcommon (openSUSE-2018-1418)

high Nessus Plugin ID 119023

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Synopsis

The remote openSUSE host is missing a security update.

Description

This update for libxkbcommon to version 0.8.2 fixes the following issues :

 - Fix a few NULL-dereferences, out-of-bounds access and undefined behavior in the XKB text format parser.

 - CVE-2018-15853: Endless recursion could have been used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation (bsc#1105832).

 - CVE-2018-15854: Unchecked NULL pointer usage could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because geometry tokens were desupported incorrectly (bsc#1105832).

 - CVE-2018-15855: Unchecked NULL pointer usage could have been 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 (bsc#1105832).

 - CVE-2018-15856: An infinite loop when reaching EOL unexpectedly could be used by local attackers to cause a denial of service during parsing of crafted keymap files (bsc#1105832).

 - CVE-2018-15857: An invalid free in ExprAppendMultiKeysymList could have been used by local attackers to crash xkbcommon keymap parsers or possibly have unspecified other impact by supplying a crafted keymap file (bsc#1105832).

 - CVE-2018-15858: Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file (bsc#1105832).

 - CVE-2018-15859: Unchecked NULL pointer usage when parsing invalid atoms in ExprResolveLhs could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because lookup failures are mishandled (bsc#1105832).

 - CVE-2018-15861: Unchecked NULL pointer usage in ExprResolveLhs could have been 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 (bsc#1105832).

 - CVE-2018-15862: Unchecked NULL pointer usage in LookupModMask could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with invalid virtual modifiers (bsc#1105832).

 - CVE-2018-15863: Unchecked NULL pointer usage in ResolveStateAndPredicate could have been used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file with a no-op modmask expression (bsc#1105832).

 - CVE-2018-15864: Unchecked NULL pointer usage in resolve_keysym could have been 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 (bsc#1105832).

This update was imported from the SUSE:SLE-15:Update update project.

Solution

Update the affected libxkbcommon packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=1105832

Plugin Details

Severity: High

ID: 119023

File Name: openSUSE-2018-1418.nasl

Version: 1.4

Type: local

Agent: unix

Published: 11/19/2018

Updated: 7/22/2024

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2018-15857

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:libxkbcommon-x11-devel, cpe:/o:novell:opensuse:15.0, p-cpe:/a:novell:opensuse:libxkbcommon0, p-cpe:/a:novell:opensuse:libxkbcommon-x11-0-debuginfo, p-cpe:/a:novell:opensuse:libxkbcommon-x11-devel-32bit, p-cpe:/a:novell:opensuse:libxkbcommon-devel, p-cpe:/a:novell:opensuse:libxkbcommon0-debuginfo, p-cpe:/a:novell:opensuse:libxkbcommon-devel-32bit, p-cpe:/a:novell:opensuse:libxkbcommon0-32bit, p-cpe:/a:novell:opensuse:libxkbcommon-x11-0-32bit, p-cpe:/a:novell:opensuse:libxkbcommon-debugsource, p-cpe:/a:novell:opensuse:libxkbcommon0-32bit-debuginfo, p-cpe:/a:novell:opensuse:libxkbcommon-x11-0-32bit-debuginfo, p-cpe:/a:novell:opensuse:libxkbcommon-x11-0

Required KB Items: Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/16/2018

Reference Information

CVE: CVE-2018-15853, CVE-2018-15854, CVE-2018-15855, CVE-2018-15856, CVE-2018-15857, CVE-2018-15858, CVE-2018-15859, CVE-2018-15861, CVE-2018-15862, CVE-2018-15863, CVE-2018-15864