SUSE: Security Advisory (SUSE-SU-2018:2976-1)

# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.1.4.2018.2976.1");
  script_cve_id("CVE-2018-15908", "CVE-2018-15909", "CVE-2018-15910", "CVE-2018-15911", "CVE-2018-16509", "CVE-2018-16510", "CVE-2018-16511", "CVE-2018-16513", "CVE-2018-16539", "CVE-2018-16540", "CVE-2018-16541", "CVE-2018-16542", "CVE-2018-16543", "CVE-2018-16585", "CVE-2018-16802", "CVE-2018-17183");
  script_tag(name:"creation_date", value:"2021-06-09 14:57:36 +0000 (Wed, 09 Jun 2021)");
  script_version("2024-02-02T14:37:50+0000");
  script_tag(name:"last_modification", value:"2024-02-02 14:37:50 +0000 (Fri, 02 Feb 2024)");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2018-11-19 14:24:03 +0000 (Mon, 19 Nov 2018)");

  script_name("SUSE: Security Advisory (SUSE-SU-2018:2976-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("SuSE Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/suse_sles", "ssh/login/rpms", re:"ssh/login/release=(SLES15\.0)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2018:2976-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2018/suse-su-20182976-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'ghostscript' package(s) announced via the SUSE-SU-2018:2976-1 advisory.");

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

  script_tag(name:"insight", value:"This update for ghostscript to version 9.25 fixes the following issues:

These security issues were fixed:
CVE-2018-17183: Remote attackers were be able to supply crafted
 PostScript to potentially overwrite or replace error handlers to inject
 code (bsc#1109105)

CVE-2018-15909: Prevent type confusion using the .shfill operator that
 could have been used by attackers able to supply crafted PostScript
 files to crash the interpreter or potentially execute code (bsc#1106172).

CVE-2018-15908: Prevent attackers that are able to supply malicious
 PostScript files to bypass .tempfile restrictions and write files
 (bsc#1106171).

CVE-2018-15910: Prevent a type confusion in the LockDistillerParams
 parameter that could have been used to crash the interpreter or execute
 code (bsc#1106173).

CVE-2018-15911: Prevent use uninitialized memory access in the aesdecode
 operator that could have been used to crash the interpreter or
 potentially execute code (bsc#1106195).

CVE-2018-16513: Prevent a type confusion in the setcolor function that
 could have been used to crash the interpreter or possibly have
 unspecified other impact (bsc#1107412).

CVE-2018-16509: Incorrect 'restoration of privilege' checking during
 handling
 of /invalidaccess exceptions could be have been used by attackers able
 to supply crafted PostScript to execute code using the 'pipe'
 instruction (bsc#1107410).

CVE-2018-16510: Incorrect exec stack handling in the 'CS' and 'SC' PDF
 primitives could have been used by remote attackers able to supply
 crafted PDFs to crash the interpreter or possibly have unspecified other
 impact (bsc#1107411).

CVE-2018-16542: Prevent attackers able to supply crafted PostScript
 files from using insufficient interpreter stack-size checking during
 error handling to crash the interpreter (bsc#1107413).

CVE-2018-16541: Prevent attackers able to supply crafted PostScript
 files from using incorrect free logic in pagedevice replacement to crash
 the interpreter (bsc#1107421).

CVE-2018-16540: Prevent use-after-free in copydevice handling that could
 have been used to crash the interpreter or possibly have unspecified
 other impact (bsc#1107420).

CVE-2018-16539: Prevent attackers able to supply crafted PostScript
 files from using incorrect access checking in temp file handling to
 disclose contents
 of files on the system otherwise not readable (bsc#1107422).

CVE-2018-16543: gssetresolution and gsgetresolution allowed attackers to
 have an unspecified impact (bsc#1107423).

CVE-2018-16511: A type confusion in 'ztype' could have been used by
 remote attackers able to supply crafted PostScript to crash the
 interpreter or possibly have unspecified other impact (bsc#1107426).

CVE-2018-16585: The .setdistillerkeys PostScript command was accepted
 even though it is not intended for use during document processing (e.g.,
 after the startup phase). This lead to memory corruption, ... [Please see the references for more information on the vulnerabilities]");

  script_tag(name:"affected", value:"'ghostscript' package(s) on SUSE Linux Enterprise Module for Basesystem 15, SUSE Linux Enterprise Module for Desktop Applications 15.");

  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 == "SLES15.0") {

  if(!isnull(res = isrpmvuln(pkg:"ghostscript", rpm:"ghostscript~9.25~3.6.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"ghostscript-debuginfo", rpm:"ghostscript-debuginfo~9.25~3.6.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"ghostscript-debugsource", rpm:"ghostscript-debugsource~9.25~3.6.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"ghostscript-devel", rpm:"ghostscript-devel~9.25~3.6.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"ghostscript-x11", rpm:"ghostscript-x11~9.25~3.6.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"ghostscript-x11-debuginfo", rpm:"ghostscript-x11-debuginfo~9.25~3.6.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libspectre-debugsource", rpm:"libspectre-debugsource~0.2.8~3.2.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libspectre-devel", rpm:"libspectre-devel~0.2.8~3.2.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libspectre1", rpm:"libspectre1~0.2.8~3.2.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libspectre1-debuginfo", rpm:"libspectre1-debuginfo~0.2.8~3.2.1", rls:"SLES15.0"))) {
    report += res;
  }

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

exit(0);