SUSE: Security Advisory (SUSE-SU-2021:0434-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2021.0434.1");
  script_cve_id("CVE-2019-20934", "CVE-2020-0444", "CVE-2020-0465", "CVE-2020-0466", "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-2021:0434-1)");
  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\.0SP4)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2021:0434-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2021/suse-su-20210434-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'Linux Kernel' package(s) announced via the SUSE-SU-2021:0434-1 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 12 SP4 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 (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-2020-27835: 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-2020-25211: 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-2020-25639: Fixed a NULL pointer dereference via nouveau ioctl
 (bnc#1176846).

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-2020-15436: 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-2020-27777: 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 implementation
 (bnc#1179601).

CVE-2020-27825: Fixed a race in the trace_open and buffer resize calls
 (bsc#1179960).

CVE-2020-29371: Fixed uninitialized memory leaks to userspace
 (bsc#1179429).

CVE-2020-29660: Fixed a locking inconsistency in the tty subsystem that
 may have allowed a read-after-free attack against TIOCGSID (bnc#1179745).

CVE-2020-29661: Fixed a locking issue in the tty subsystem that allowed
 a use-after-free attack against TIOCSPGRP (bsc#1179745).

CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could
 have been used by local attackers to read privileged information or
 ... [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 12-SP4, SUSE Linux Enterprise Live Patching 12-SP4, SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Server for SAP 12-SP4, SUSE OpenStack Cloud 9, SUSE OpenStack Cloud Crowbar 9.");

  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 == "SLES12.0SP4") {

  if(!isnull(res = isrpmvuln(pkg:"kernel-default", rpm:"kernel-default~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-base", rpm:"kernel-default-base~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-base-debuginfo", rpm:"kernel-default-base-debuginfo~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debuginfo", rpm:"kernel-default-debuginfo~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debugsource", rpm:"kernel-default-debugsource~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel", rpm:"kernel-default-devel~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel-debuginfo", rpm:"kernel-default-devel-debuginfo~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-man", rpm:"kernel-default-man~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-devel", rpm:"kernel-devel~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-macros", rpm:"kernel-macros~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-source", rpm:"kernel-source~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-syms", rpm:"kernel-syms~4.12.14~95.68.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

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

exit(0);