Huawei EulerOS: Security Advisory for lxc (EulerOS-SA-2023-1476)

# SPDX-FileCopyrightText: 2023 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("1.3.6.1.4.1.25623.1.1.2.2023.1476");
  script_cve_id("CVE-2022-47952");
  script_tag(name:"creation_date", value:"2023-03-09 04:15:24 +0000 (Thu, 09 Mar 2023)");
  script_version("2024-02-05T14:36:57+0000");
  script_tag(name:"last_modification", value:"2024-02-05 14:36:57 +0000 (Mon, 05 Feb 2024)");
  script_tag(name:"cvss_base", value:"1.7");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:S/C:P/I:N/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-01-09 15:20:26 +0000 (Mon, 09 Jan 2023)");

  script_name("Huawei EulerOS: Security Advisory for lxc (EulerOS-SA-2023-1476)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2023 Greenbone AG");
  script_family("Huawei EulerOS Local Security Checks");
  script_dependencies("gb_huawei_euleros_consolidation.nasl");
  script_mandatory_keys("ssh/login/euleros", "ssh/login/rpms", re:"ssh/login/release=EULEROS\-2\.0SP9\-X86_64");

  script_xref(name:"Advisory-ID", value:"EulerOS-SA-2023-1476");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2023-1476");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'lxc' package(s) announced via the EulerOS-SA-2023-1476 advisory.");

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

  script_tag(name:"insight", value:"lxc-user-nic in lxc through 5.0.1 is installed setuid root, and may allow local users to infer whether any file exists, even within a protected directory tree, because 'Failed to open' often indicates that a file does not exist, whereas 'does not refer to a network namespace path' often indicates that a file exists. NOTE: this is different from CVE-2018-6556 because the CVE-2018-6556 fix design was based on the premise that 'we will report back to the user that the open() failed but the user has no way of knowing why it failed', however, in many realistic cases, there are no plausible reasons for failing except that the file does not exist.(CVE-2022-47952)");

  script_tag(name:"affected", value:"'lxc' package(s) on Huawei EulerOS V2.0SP9(x86_64).");

  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 == "EULEROS-2.0SP9-x86_64") {

  if(!isnull(res = isrpmvuln(pkg:"lxc", rpm:"lxc~4.0.1~2020111701.h22.eulerosv2r9", rls:"EULEROS-2.0SP9-x86_64"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"lxc-libs", rpm:"lxc-libs~4.0.1~2020111701.h22.eulerosv2r9", rls:"EULEROS-2.0SP9-x86_64"))) {
    report += res;
  }

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

exit(0);