SUSE: Security Advisory (SUSE-SU-2017:3090-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2017.3090.1");
  script_cve_id("CVE-2017-16837");
  script_tag(name:"creation_date", value:"2021-04-19 00:00:00 +0000 (Mon, 19 Apr 2021)");
  script_version("2024-02-02T14:37:49+0000");
  script_tag(name:"last_modification", value:"2024-02-02 14:37:49 +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:"2017-12-04 16:52:12 +0000 (Mon, 04 Dec 2017)");

  script_name("SUSE: Security Advisory (SUSE-SU-2017:3090-1)");
  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=(SLES12\.0SP2|SLES12\.0SP3)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2017:3090-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2017/suse-su-20173090-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'tboot' package(s) announced via the SUSE-SU-2017:3090-1 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 tboot fixes the following issues:
Security issue fixed:
- CVE-2017-16837: Certain function pointers in Trusted Boot (tboot)
 through 1.9.6 are notvalidated and can cause arbitrary code execution,
 which allows local users tooverwrite dynamic PCRs of Trusted Platform
 Module (TPM) by h (bsc#1068390)
Bug fixes:
- Fixed failed trusted boot on some systems like Intel Xeon 'Purley 8s'
 processors. The following error message showed: 'TBOOT: wait-for-sipi
 loop timed-out'. Booting continued but 'TXT measured launch' was wrongly
 reported as FALSE. (bsc#1057555)");

  script_tag(name:"affected", value:"'tboot' package(s) on SUSE Linux Enterprise Server 12-SP2, SUSE Linux Enterprise Server 12-SP3.");

  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 == "SLES12.0SP2") {

  if(!isnull(res = isrpmvuln(pkg:"tboot", rpm:"tboot~20160518_1.9.4~7.5.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"tboot-debuginfo", rpm:"tboot-debuginfo~20160518_1.9.4~7.5.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"tboot-debugsource", rpm:"tboot-debugsource~20160518_1.9.4~7.5.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

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

if(release == "SLES12.0SP3") {

  if(!isnull(res = isrpmvuln(pkg:"tboot", rpm:"tboot~20160518_1.9.4~7.5.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"tboot-debuginfo", rpm:"tboot-debuginfo~20160518_1.9.4~7.5.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"tboot-debugsource", rpm:"tboot-debugsource~20160518_1.9.4~7.5.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

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

exit(0);