ID de Prueba:	1.3.6.1.4.1.25623.1.1.10.2018.0369
Categoría:	Mageia Linux Local Security Checks
Título:	Mageia: Security Advisory (MGASA-2018-0369)
Resumen:	The remote host is missing an update for the 'libxkbcommon' package(s) announced via the MGASA-2018-0369 advisory.
Descripción:	Summary: The remote host is missing an update for the 'libxkbcommon' package(s) announced via the MGASA-2018-0369 advisory. Vulnerability Insight: Updated libxkbcommon packages fix security vulnerabilities: 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 geometry tokens were desupported incorrectly (CVE-2018-15854). 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 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). 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 when handling invalid aliases in CopyKeyAliasesToKeymap in xkbcomp/keycodes.c 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 (CVE-2018-15858). 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 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 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 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 ... [Please see the references for more information on the vulnerabilities] Affected Software/OS: 'libxkbcommon' package(s) on Mageia 6. 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
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2018-15853 https://security.gentoo.org/glsa/201810-05 https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html RedHat Security Advisories: RHSA-2019:2079 https://access.redhat.com/errata/RHSA-2019:2079 https://usn.ubuntu.com/3786-1/ https://usn.ubuntu.com/3786-2/ Common Vulnerability Exposure (CVE) ID: CVE-2018-15854 https://github.com/xkbcommon/libxkbcommon/commit/e3cacae7b1bfda0d839c280494f23284a1187adf Common Vulnerability Exposure (CVE) ID: CVE-2018-15855 https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff Common Vulnerability Exposure (CVE) ID: CVE-2018-15856 https://github.com/xkbcommon/libxkbcommon/commit/842e4351c2c97de6051cab6ce36b4a81e709a0e1 Common Vulnerability Exposure (CVE) ID: CVE-2018-15857 https://github.com/xkbcommon/libxkbcommon/commit/c1e5ac16e77a21f87bdf3bc4dea61b037a17dddb Common Vulnerability Exposure (CVE) ID: CVE-2018-15858 https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f Common Vulnerability Exposure (CVE) ID: CVE-2018-15859 https://github.com/xkbcommon/libxkbcommon/commit/bb4909d2d8fa6b08155e449986a478101e2b2634 https://lists.freedesktop.org/archives/wayland-devel/2018-August/039243.html Common Vulnerability Exposure (CVE) ID: CVE-2018-15861 https://github.com/xkbcommon/libxkbcommon/commit/38e1766bc6e20108948aec8a0b222a4bad0254e9 Common Vulnerability Exposure (CVE) ID: CVE-2018-15862 https://github.com/xkbcommon/libxkbcommon/commit/4e2ee9c3f6050d773f8bbe05bc0edb17f1ff8371 Common Vulnerability Exposure (CVE) ID: CVE-2018-15863 https://github.com/xkbcommon/libxkbcommon/commit/96df3106d49438e442510c59acad306e94f3db4d Common Vulnerability Exposure (CVE) ID: CVE-2018-15864 https://github.com/xkbcommon/libxkbcommon/commit/a8ea7a1d3daa7bdcb877615ae0a252c189153bd2
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