SUSE: Security Advisory (SUSE-SU-2021:3969-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2021.3969.1");
  script_cve_id("CVE-2018-3639", "CVE-2018-9517", "CVE-2019-3874", "CVE-2019-3900", "CVE-2020-12770", "CVE-2020-3702", "CVE-2021-0941", "CVE-2021-20320", "CVE-2021-20322", "CVE-2021-22543", "CVE-2021-31916", "CVE-2021-33033", "CVE-2021-34556", "CVE-2021-34981", "CVE-2021-35477", "CVE-2021-3640", "CVE-2021-3653", "CVE-2021-3655", "CVE-2021-3656", "CVE-2021-3659", "CVE-2021-3679", "CVE-2021-37159", "CVE-2021-3732", "CVE-2021-3744", "CVE-2021-3752", "CVE-2021-3753", "CVE-2021-37576", "CVE-2021-3760", "CVE-2021-3764", "CVE-2021-3772", "CVE-2021-38160", "CVE-2021-38198", "CVE-2021-38204", "CVE-2021-40490", "CVE-2021-41864", "CVE-2021-42008", "CVE-2021-42252");
  script_tag(name:"creation_date", value:"2021-12-08 03:23:08 +0000 (Wed, 08 Dec 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:"7.9");
  script_tag(name:"cvss_base_vector", value:"AV:A/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:C/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-03-10 18:55:35 +0000 (Thu, 10 Mar 2022)");

  script_name("SUSE: Security Advisory (SUSE-SU-2021:3969-1)");
  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-2021:3969-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2021/suse-su-20213969-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'Linux Kernel' package(s) announced via the SUSE-SU-2021:3969-1 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:

Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573) You can re-enable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

CVE-2018-3639: Fixed a speculative execution that may allow unauthorized
 disclosure of information to an attacker with local user access via a
 side-channel analysis. (bsc#1087082)

CVE-2021-20320: Fix a bug that allows a local attacker with special user
 privilege can circumvent the verifier and may lead to a confidentiality
 problem. (bsc#1190601)

CVE-2021-0941: Fixed A missing sanity check to the current MTU check
 that may allow a local attacker with special user privilege to gain
 access to out-of-bounds memory leading to a system crash or a leak of
 internal kernel information. (bnc#1192045)

CVE-2021-31916: Fixed a bound check failure that could allows an
 attacker with special user (CAP_SYS_ADMIN) privilege to gain access to
 out-of-bounds memory leading to a system crash, a leak of internal
 kernel information, or a privilege escalation problem. (bnc#1192781)

CVE-2021-20322: Fixed a bug that provides to an attacker the ability to
 quickly scan open UDP ports. (bsc#1191790)

CVE-2021-3772: Fixed an issue that would allow a blind attacker may be
 able to kill an existing SCTP association through invalid chunks if the
 attacker knows the IP-addresses and port numbers being used and the
 attacker can send packets with spoofed IP addresses. (bsc#1190351)

CVE-2021-34981: Fixed an issue that allows an attacker with a local
 account to escalate privileges when CAPI (ISDN) hardware connection
 fails. (bsc#1191961)

CVE-2018-9517: Fixed possible memory corruption due to a use after free
 in pppol2tp_connect (bsc#1108488).

CVE-2019-3874: Fixed possible denial of service attack via SCTP socket
 buffer used by a userspace applications (bnc#1129898).

CVE-2019-3900: Fixed an infinite loop issue while handling incoming
 packets in handle_rx() (bnc#1133374).

CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases
 (bsc#1171420).

CVE-2020-3702: Fixed a bug which could be triggered with specifically
 timed and handcrafted traffic and cause internal errors in a WLAN device
 that lead to improper layer 2 Wi-Fi encryption with a consequent
 possibility of information disclosure. (bnc#1191193)

CVE-2021-22543: Fixed improper handling of VM_IO<pipe>VM_PFNMAP vmas in KVM,
 which could bypass RO checks and can lead to pages being freed while
 still accessible by the VMM and guest. This allowed users with the
 ability to start and control a VM to read/write random pages of memory
 and can result in local privilege escalation (bsc#1186482).

CVE-2021-33033: Fixed a ... [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~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-base", rpm:"kernel-default-base~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debuginfo", rpm:"kernel-default-debuginfo~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-debugsource", rpm:"kernel-default-debugsource~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel", rpm:"kernel-default-devel~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-devel-debuginfo", rpm:"kernel-default-devel-debuginfo~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-default-man", rpm:"kernel-default-man~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-devel", rpm:"kernel-devel~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-docs", rpm:"kernel-docs~4.12.14~150.78.2", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-macros", rpm:"kernel-macros~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-obs-build", rpm:"kernel-obs-build~4.12.14~150.78.2", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-obs-build-debugsource", rpm:"kernel-obs-build-debugsource~4.12.14~150.78.2", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-source", rpm:"kernel-source~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-syms", rpm:"kernel-syms~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-base", rpm:"kernel-vanilla-base~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-base-debuginfo", rpm:"kernel-vanilla-base-debuginfo~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-debuginfo", rpm:"kernel-vanilla-debuginfo~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-vanilla-debugsource", rpm:"kernel-vanilla-debugsource~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-zfcpdump-debuginfo", rpm:"kernel-zfcpdump-debuginfo~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kernel-zfcpdump-debugsource", rpm:"kernel-zfcpdump-debugsource~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"reiserfs-kmp-default", rpm:"reiserfs-kmp-default~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"reiserfs-kmp-default-debuginfo", rpm:"reiserfs-kmp-default-debuginfo~4.12.14~150.78.1", rls:"SLES15.0"))) {
    report += res;
  }

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

exit(0);