Test Kennung:	1.3.6.1.4.1.25623.1.1.2.2019.2540
Kategorie:	Huawei EulerOS Local Security Checks
Titel:	Huawei EulerOS: Security Advisory for libxkbcommon (EulerOS-SA-2019-2540)
Zusammenfassung:	The remote host is missing an update for the Huawei EulerOS 'libxkbcommon' package(s) announced via the EulerOS-SA-2019-2540 advisory.
Beschreibung:	Summary: The remote host is missing an update for the Huawei EulerOS 'libxkbcommon' package(s) announced via the EulerOS-SA-2019-2540 advisory. Vulnerability Insight: 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 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) 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) 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 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 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) 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) Affected Software/OS: 'libxkbcommon' package(s) on Huawei EulerOS V2.0SP5. Solution: Please install the updated package(s). CVSS Score: 4.6 CVSS Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P
Querverweis:	Common Vulnerability Exposure (CVE) ID: CVE-2018-15853 Common Vulnerability Exposure (CVE) ID: CVE-2018-15857 Common Vulnerability Exposure (CVE) ID: CVE-2018-15859 Common Vulnerability Exposure (CVE) ID: CVE-2018-15861 Common Vulnerability Exposure (CVE) ID: CVE-2018-15862 Common Vulnerability Exposure (CVE) ID: CVE-2018-15863 Common Vulnerability Exposure (CVE) ID: CVE-2018-15864
Copyright	Copyright (C) 2020 Greenbone Networks GmbH

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