Mageia: Security Advisory (MGASA-2018-0369)

# SPDX-FileCopyrightText: 2022 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.1.10.2018.0369");
  script_cve_id("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");
  script_tag(name:"creation_date", value:"2022-01-28 10:58:44 +0000 (Fri, 28 Jan 2022)");
  script_version("2024-02-02T05:06:09+0000");
  script_tag(name:"last_modification", value:"2024-02-02 05:06:09 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"4.6");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-11-01 17:12:08 +0000 (Thu, 01 Nov 2018)");

  script_name("Mageia: Security Advisory (MGASA-2018-0369)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("Mageia Linux Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/mageia_linux", "ssh/login/release", re:"ssh/login/release=MAGEIA6");

  script_xref(name:"Advisory-ID", value:"MGASA-2018-0369");
  script_xref(name:"URL", value:"https://advisories.mageia.org/MGASA-2018-0369.html");
  script_xref(name:"URL", value:"https://bugs.mageia.org/show_bug.cgi?id=23506");
  script_xref(name:"URL", value:"https://lists.fedoraproject.org/archives/list/[email protected]/thread/377JCLG64STYRNYZZ4B5QKGX2MAW6JUX/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'libxkbcommon' package(s) announced via the MGASA-2018-0369 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"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]");

  script_tag(name:"affected", value:"'libxkbcommon' package(s) on Mageia 6.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "MAGEIA6") {

  if(!isnull(res = isrpmvuln(pkg:"lib64xkbcommon-devel", rpm:"lib64xkbcommon-devel~0.8.2~1.mga6", rls:"MAGEIA6"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"lib64xkbcommon0", rpm:"lib64xkbcommon0~0.8.2~1.mga6", rls:"MAGEIA6"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxkbcommon", rpm:"libxkbcommon~0.8.2~1.mga6", rls:"MAGEIA6"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxkbcommon-devel", rpm:"libxkbcommon-devel~0.8.2~1.mga6", rls:"MAGEIA6"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxkbcommon-doc", rpm:"libxkbcommon-doc~0.8.2~1.mga6", rls:"MAGEIA6"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libxkbcommon0", rpm:"libxkbcommon0~0.8.2~1.mga6", rls:"MAGEIA6"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);