SUSE: Security Advisory (SUSE-SU-2021:0740-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2021.0740.1");
  script_cve_id("CVE-2020-29368", "CVE-2020-29374", "CVE-2021-26930", "CVE-2021-26931", "CVE-2021-26932");
  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:"6.9");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.1/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:"2021-02-23 18:35:29 +0000 (Tue, 23 Feb 2021)");

  script_name("SUSE: Security Advisory (SUSE-SU-2021:0740-1)");
  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-2021:0740-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2021/suse-su-20210740-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'Linux Kernel' package(s) announced via the SUSE-SU-2021:0740-1 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 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

CVE-2021-26930: Fixed an improper error handling in blkback's grant
 mapping (XSA-365 bsc#1181843).

CVE-2021-26931: Fixed an issue where Linux kernel was treating grant
 mapping errors as bugs (XSA-362 bsc#1181753).

CVE-2021-26932: Fixed improper error handling issues in Linux grant
 mapping (XSA-361 bsc#1181747). by remote attackers to read or write
 files via directory traversal in an XCOPY request (bsc#178372).

CVE-2020-29368,CVE-2020-29374: Fixed an issue in copy-on-write
 implementation which could have granted unintended write access because
 of a race condition in a THP mapcount check (bsc#1179660, bsc#1179428).

The following non-security bugs were fixed:

kernel-{binary,source}.spec.in: do not create loop symlinks (bsc#1179082)

kernel-source.spec: Fix build with rpm 4.16 (boo#1179015).

rpm/kernel-binary.spec.in: avoid using barewords (bsc#1179014)

rpm/kernel-binary.spec.in: avoid using more barewords (bsc#1179014)
 %split_extra still contained two.

rpm/kernel-binary.spec.in: Fix compressed module handling for in-tree
 KMP (jsc#SLE-10886) The in-tree KMP that is built with SLE kernels have
 a different scriptlet that is embedded in kernel-binary.spec.in rather
 than *.sh files.

rpm/kernel-binary.spec.in: use grep -E instead of egrep (bsc#1179045)
 egrep is only a deprecated bash wrapper for 'grep -E'. So use the latter
 instead.

rpm/kernel-module-subpackage: make Group tag optional (bsc#1163592)

rpm/kernel-obs-build.spec.in: Add -q option to modprobe calls
 (bsc#1178401)

rpm/kernel-{source,binary}.spec: do not include ghost symlinks
 (boo#1179082).

rpm/mkspec: do not build kernel-obs-build on x86_32 We want to use 64bit
 kernel due to various bugs (bsc#1178762 to name one).

rpm/post.sh: Avoid purge-kernel for the first installed kernel
 (bsc#1180058)

xen/netback: avoid race in xenvif_rx_ring_slots_available()
 (bsc#1065600).

xen/netback: fix spurious event detection for common event case
 (bsc#1182175).");

  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~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-base", rpm:"kernel-default-base~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debuginfo", rpm:"kernel-default-debuginfo~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debugsource", rpm:"kernel-default-debugsource~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel", rpm:"kernel-default-devel~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel-debuginfo", rpm:"kernel-default-devel-debuginfo~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-man", rpm:"kernel-default-man~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-devel", rpm:"kernel-devel~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-docs", rpm:"kernel-docs~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-macros", rpm:"kernel-macros~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-obs-build", rpm:"kernel-obs-build~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-obs-build-debugsource", rpm:"kernel-obs-build-debugsource~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-source", rpm:"kernel-source~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-syms", rpm:"kernel-syms~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-base", rpm:"kernel-vanilla-base~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-base-debuginfo", rpm:"kernel-vanilla-base-debuginfo~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-debuginfo", rpm:"kernel-vanilla-debuginfo~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-debugsource", rpm:"kernel-vanilla-debugsource~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-zfcpdump-debuginfo", rpm:"kernel-zfcpdump-debuginfo~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-zfcpdump-debugsource", rpm:"kernel-zfcpdump-debugsource~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"reiserfs-kmp-default", rpm:"reiserfs-kmp-default~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"reiserfs-kmp-default-debuginfo", rpm:"reiserfs-kmp-default-debuginfo~4.12.14~150.69.1", rls:"SLES15.0"))) {
    report += res;
  }

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

exit(0);