SUSE: Security Advisory (SUSE-SU-2022:0668-1)

# SPDX-FileCopyrightText: 2022 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("1.3.6.1.4.1.25623.1.1.4.2022.0668.1");
  script_cve_id("CVE-2021-0920", "CVE-2021-28688");
  script_tag(name:"creation_date", value:"2022-03-02 16:03:12 +0000 (Wed, 02 Mar 2022)");
  script_version("2024-02-02T14:37:51+0000");
  script_tag(name:"last_modification", value:"2024-02-02 14:37:51 +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:C/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-12-17 16:21:54 +0000 (Fri, 17 Dec 2021)");

  script_name("SUSE: Security Advisory (SUSE-SU-2022:0668-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 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\.0SP3)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2022:0668-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2022/suse-su-20220668-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'Linux Kernel (Live Patch 42 for SLE 12 SP3)' package(s) announced via the SUSE-SU-2022:0668-1 advisory.");

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

  script_tag(name:"insight", value:"This update for the Linux Kernel 4.4.180-94_153 fixes several issues.

The following security issues were fixed:

CVE-2021-0920: Fixed a local privilege escalation due to an use after
 free bug in unix_gc (bsc#1194463).

CVE-2021-28688: Fixed XSA-365 that includes initialization of pointers
 such that subsequent cleanup code wouldn't use uninitialized or stale
 values. This initialization went too far and may under certain
 conditions also overwrite pointers which are in need of cleaning up. The
 lack of cleanup would result in leaking persistent grants. The leak in
 turn would prevent fully cleaning up after a respective guest has died,
 leaving around zombie domains (bsc#1182294).");

  script_tag(name:"affected", value:"'Linux Kernel (Live Patch 42 for SLE 12 SP3)' package(s) on SUSE Linux Enterprise Server 12-SP3, SUSE Linux Enterprise Server for SAP 12-SP3.");

  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 == "SLES12.0SP3") {

  if(!isnull(res = isrpmvuln(pkg:"kgraft-patch-4_4_180-94_153-default", rpm:"kgraft-patch-4_4_180-94_153-default~2~2.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kgraft-patch-4_4_180-94_153-default-debuginfo", rpm:"kgraft-patch-4_4_180-94_153-default-debuginfo~2~2.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

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

exit(0);