SUSE: Security Advisory (SUSE-SU-2022:1641-1)

# 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("1.3.6.1.4.1.25623.1.1.4.2022.1641.1");
  script_cve_id("CVE-2021-28688", "CVE-2021-39713", "CVE-2022-1011");
  script_tag(name:"creation_date", value:"2022-05-12 04:24:30 +0000 (Thu, 12 May 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:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-10-18 20:22:04 +0000 (Tue, 18 Oct 2022)");

  script_name("SUSE: Security Advisory (SUSE-SU-2022:1641-1)");
  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-2022:1641-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2022/suse-su-20221641-1/");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'Linux Kernel (Live Patch 44 for SLE 12 SP3)' package(s) announced via the SUSE-SU-2022:1641-1 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_161 fixes several issues.

The following security issues were fixed:

CVE-2022-1011: A use-after-free flaw was found in the FUSE filesystem in
 the way a user triggers write(). This flaw allowed a local user to gain
 unauthorized access to data from the FUSE filesystem, resulting in
 privilege escalation. (bsc#1197344)

CVE-2021-39713: Fixed a race condition in the network scheduling
 subsystem which could lead to a use-after-free. (bsc#1197211)

CVE-2021-28688: The fix for XSA-365 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. All Linux versions having the fix for
 XSA-365 applied are vulnerable. XSA-365 was classified to affect
 versions back to at least 3.11 (bsc#1182294)");

  script_tag(name:"affected", value:"'Linux Kernel (Live Patch 44 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_161-default", rpm:"kgraft-patch-4_4_180-94_161-default~2~2.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"kgraft-patch-4_4_180-94_161-default-debuginfo", rpm:"kgraft-patch-4_4_180-94_161-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);