SUSE: Security Advisory (SUSE-SU-2020:2106-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2020.2106.1");
  script_cve_id("CVE-2019-16746", "CVE-2019-20908", "CVE-2020-0305", "CVE-2020-10766", "CVE-2020-10767", "CVE-2020-10768", "CVE-2020-10769", "CVE-2020-10773", "CVE-2020-12771", "CVE-2020-12888", "CVE-2020-13974", "CVE-2020-14416", "CVE-2020-15393", "CVE-2020-15780");
  script_tag(name:"creation_date", value:"2021-04-19 00:00:00 +0000 (Mon, 19 Apr 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:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-09-24 13:13:18 +0000 (Tue, 24 Sep 2019)");

  script_name("SUSE: Security Advisory (SUSE-SU-2020:2106-1)");
  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-2020:2106-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2020/suse-su-20202106-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'Linux Kernel' package(s) announced via the SUSE-SU-2020:2106-1 advisory.");

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

  script_tag(name:"insight", value:"The SUSE Linux Enterprise 15 GA LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

CVE-2020-0305: In cdev_get of char_dev.c, there is a possible
 use-after-free due to a race condition. This could lead to local
 escalation of privilege with System execution privileges needed. User
 interaction is not needed for exploitation (bnc#1174462).

CVE-2019-20908: An issue was discovered in drivers/firmware/efi/efi.c
 where incorrect access permissions for the efivar_ssdt ACPI variable
 could be used by attackers to bypass lockdown or secure boot
 restrictions, aka CID-1957a85b0032 (bnc#1173567).

CVE-2020-15780: An issue was discovered in drivers/acpi/acpi_configfs.c
 where injection of malicious ACPI tables via configfs could be used by
 attackers to bypass lockdown and secure boot restrictions, aka
 CID-75b0cea7bf30 (bnc#1173573).

CVE-2020-15393: usbtest_disconnect in drivers/usb/misc/usbtest.c had a
 memory leak, aka CID-28ebeb8db770 (bnc#1173514).

CVE-2020-12771: btree_gc_coalesce in drivers/md/bcache/btree.c has a
 deadlock if a coalescing operation fails (bnc#1171732).

CVE-2019-16746: An issue was discovered in net/wireless/nl80211.c which
 did not check the length of variable elements in a beacon head, leading
 to a buffer overflow (bnc#1152107 1173659).

CVE-2020-12888: The VFIO PCI driver mishandled attempts to access
 disabled memory space (bnc#1171868).

CVE-2020-10769: A buffer over-read flaw was found in
 crypto_authenc_extractkeys in crypto/authenc.c in the IPsec
 Cryptographic algorithm's module, authenc. When a payload longer than 4
 bytes, and is not following 4-byte alignment boundary guidelines, it
 causes a buffer over-read threat, leading to a system crash. This flaw
 allowed a local attacker with user privileges to cause a denial of
 service (bnc#1173265).

CVE-2020-10773: A kernel stack information leak on s390/s390x was fixed
 (bnc#1172999).

CVE-2020-14416: A race condition in tty->disc_data handling in the slip
 and slcan line discipline could lead to a use-after-free, aka
 CID-0ace17d56824. This affects drivers/net/slip/slip.c and
 drivers/net/can/slcan.c (bnc#1162002).

CVE-2020-10768: Indirect branch speculation could have been enabled
 after it was force-disabled by the PR_SPEC_FORCE_DISABLE prctl command.
 (bnc#1172783).

CVE-2020-10766: Fixed Rogue cross-process SSBD shutdown, where a Linux
 scheduler logical bug allows an attacker to turn off the SSBD
 protection. (bnc#1172781).

CVE-2020-10767: Indirect Branch Prediction Barrier was force-disabled
 when STIBP is unavailable or enhanced IBRS is available. (bnc#1172782).

CVE-2020-13974: drivers/tty/vt/keyboard.c had an integer overflow if
 k_ascii is called several times in a row, aka CID-b86dab054059
 (bnc#1172775).

The following non-security bugs were fixed:

Merge ibmvnic reset fixes (bsc#1158755 ltc#182094).

block, bfq: add ... [Please see the references for more information on the vulnerabilities]");

  script_tag(name:"affected", value:"'Linux Kernel' package(s) on SUSE Linux Enterprise High Availability 15, SUSE Linux Enterprise High Performance Computing 15, SUSE Linux Enterprise Module for Live Patching 15, SUSE Linux Enterprise Server 15, SUSE Linux Enterprise Server for SAP 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:"kernel-default", rpm:"kernel-default~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-base", rpm:"kernel-default-base~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debuginfo", rpm:"kernel-default-debuginfo~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debugsource", rpm:"kernel-default-debugsource~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel", rpm:"kernel-default-devel~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel-debuginfo", rpm:"kernel-default-devel-debuginfo~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-man", rpm:"kernel-default-man~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-devel", rpm:"kernel-devel~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-docs", rpm:"kernel-docs~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-macros", rpm:"kernel-macros~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-obs-build", rpm:"kernel-obs-build~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-obs-build-debugsource", rpm:"kernel-obs-build-debugsource~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-source", rpm:"kernel-source~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-syms", rpm:"kernel-syms~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-base", rpm:"kernel-vanilla-base~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-base-debuginfo", rpm:"kernel-vanilla-base-debuginfo~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-debuginfo", rpm:"kernel-vanilla-debuginfo~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-debugsource", rpm:"kernel-vanilla-debugsource~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-zfcpdump-debuginfo", rpm:"kernel-zfcpdump-debuginfo~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-zfcpdump-debugsource", rpm:"kernel-zfcpdump-debugsource~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"reiserfs-kmp-default", rpm:"reiserfs-kmp-default~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"reiserfs-kmp-default-debuginfo", rpm:"reiserfs-kmp-default-debuginfo~4.12.14~150.55.1", rls:"SLES15.0"))) {
    report += res;
  }

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

exit(0);