SUSE: Security Advisory (SUSE-SU-2021:0438-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2021.0438.1");
  script_cve_id("CVE-2019-20806", "CVE-2019-20934", "CVE-2020-0444", "CVE-2020-0465", "CVE-2020-0466", "CVE-2020-10781", "CVE-2020-11668", "CVE-2020-15436", "CVE-2020-15437", "CVE-2020-25211", "CVE-2020-25639", "CVE-2020-25669", "CVE-2020-27068", "CVE-2020-27777", "CVE-2020-27786", "CVE-2020-27825", "CVE-2020-27835", "CVE-2020-28374", "CVE-2020-28915", "CVE-2020-28974", "CVE-2020-29371", "CVE-2020-29568", "CVE-2020-29569", "CVE-2020-29660", "CVE-2020-29661", "CVE-2020-36158", "CVE-2020-4788", "CVE-2021-3347", "CVE-2021-3348");
  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:"2023-02-09 02:12:54 +0000 (Thu, 09 Feb 2023)");

  script_name("SUSE: Security Advisory (SUSE-SU-2021:0438-1)");
  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-2021:0438-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2021/suse-su-20210438-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'Linux Kernel' package(s) announced via the SUSE-SU-2021:0438-1 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-2021-3348: Fixed a use-after-free in nbd_add_socket that could be
 triggered by local attackers (with access to the nbd device) via an I/O
 request at a certain point during device setup (bnc#1181504).

CVE-2021-3347: A use-after-free was discovered in the PI futexes during
 fault handling, allowing local users to execute code in the kernel
 (bnc#1181349).

CVE-2020-25211: Fixed a buffer overflow in
 ctnetlink_parse_tuple_filter() which could be triggered by a local
 attackers by injecting conntrack netlink configuration (bnc#1176395).

CVE-2020-27835: A use-after-free in the infiniband hfi1 driver was
 found, specifically in the way user calls Ioctl after open dev file and
 fork. A local user could use this flaw to crash the system (bnc#1179878).

CVE-2020-29569: Fixed a potential privilege escalation and information
 leaks related to the PV block backend, as used by Xen (bnc#1179509).

CVE-2020-29568: Fixed a denial of service issue, related to processing
 watch events (bnc#1179508).

CVE-2020-0444: Fixed a bad kfree due to a logic error in
 audit_data_to_entry (bnc#1180027).

CVE-2020-0465: Fixed multiple missing bounds checks in hid-multitouch.c
 that could have led to local privilege escalation (bnc#1180029).

CVE-2020-0466: Fixed a use-after-free due to a logic error in
 do_epoll_ctl and ep_loop_check_proc of eventpoll.c (bnc#1180031).

CVE-2020-4788: Fixed an issue with IBM Power9 processors could have
 allowed a local user to obtain sensitive information from the data in
 the L1 cache under extenuating circumstances (bsc#1177666).

CVE-2020-10781: A flaw was found in the ZRAM kernel module, where a user
 with a local account and the ability to read the
 /sys/class/zram-control/hot_add file can create ZRAM device nodes in the
 /dev/ directory. This read allocates kernel memory and is not accounted
 for a user that triggers the creation of that ZRAM device. With this
 vulnerability, continually reading the device may consume a large amount
 of system memory and cause the Out-of-Memory (OOM) killer to activate
 and terminate random userspace processes, possibly making the system
 inoperable (bnc#1173074).

CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c
 which could have allowed local users to gain privileges or cause a
 denial of service (bsc#1179141).

CVE-2020-27068: Fixed an out-of-bounds read due to a missing bounds
 check in the nl80211_policy policy of nl80211.c (bnc#1180086).

CVE-2020-25639: Fixed a NULL pointer dereference via nouveau ioctl
 (bnc#1176846).

CVE-2020-27777: Fixed a privilege escalation in the Run-Time Abstraction
 Services (RTAS) interface, affecting guests running on top of PowerVM or
 KVM hypervisors (bnc#1179107).

CVE-2020-27786: Fixed an out-of-bounds write in the MIDI ... [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~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-base", rpm:"kernel-default-base~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debuginfo", rpm:"kernel-default-debuginfo~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debugsource", rpm:"kernel-default-debugsource~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel", rpm:"kernel-default-devel~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel-debuginfo", rpm:"kernel-default-devel-debuginfo~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-man", rpm:"kernel-default-man~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-devel", rpm:"kernel-devel~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-docs", rpm:"kernel-docs~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-macros", rpm:"kernel-macros~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-obs-build", rpm:"kernel-obs-build~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-obs-build-debugsource", rpm:"kernel-obs-build-debugsource~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-source", rpm:"kernel-source~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-syms", rpm:"kernel-syms~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-base", rpm:"kernel-vanilla-base~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-base-debuginfo", rpm:"kernel-vanilla-base-debuginfo~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-debuginfo", rpm:"kernel-vanilla-debuginfo~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-debugsource", rpm:"kernel-vanilla-debugsource~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-zfcpdump-debuginfo", rpm:"kernel-zfcpdump-debuginfo~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-zfcpdump-debugsource", rpm:"kernel-zfcpdump-debugsource~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"reiserfs-kmp-default", rpm:"reiserfs-kmp-default~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"reiserfs-kmp-default-debuginfo", rpm:"reiserfs-kmp-default-debuginfo~4.12.14~150.66.1", rls:"SLES15.0"))) {
    report += res;
  }

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

exit(0);