Huawei EulerOS: Security Advisory for expat (EulerOS-SA-2022-2178)

# 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("1.3.6.1.4.1.25623.1.1.2.2022.2178");
  script_cve_id("CVE-2022-25235", "CVE-2022-25236", "CVE-2022-25313", "CVE-2022-25314", "CVE-2022-25315");
  script_tag(name:"creation_date", value:"2022-08-01 04:38:15 +0000 (Mon, 01 Aug 2022)");
  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:"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:"2022-02-25 18:46:53 +0000 (Fri, 25 Feb 2022)");

  script_name("Huawei EulerOS: Security Advisory for expat (EulerOS-SA-2022-2178)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2022 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=EULEROSVIRT\-2\.9\.1");

  script_xref(name:"Advisory-ID", value:"EulerOS-SA-2022-2178");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2022-2178");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'expat' package(s) announced via the EulerOS-SA-2022-2178 advisory.");

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

  script_tag(name:"insight", value:"xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs.(CVE-2022-25236)

xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context.(CVE-2022-25235)

In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.(CVE-2022-25313)

In Expat (aka libexpat) before 2.4.5, there is an integer overflow in copyString.(CVE-2022-25314)

In Expat (aka libexpat) before 2.4.5, there is an integer overflow in storeRawNames.(CVE-2022-25315)");

  script_tag(name:"affected", value:"'expat' package(s) on Huawei EulerOS Virtualization release 2.9.1.");

  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 == "EULEROSVIRT-2.9.1") {

  if(!isnull(res = isrpmvuln(pkg:"expat", rpm:"expat~2.2.9~1.h7.eulerosv2r9", rls:"EULEROSVIRT-2.9.1"))) {
    report += res;
  }

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

exit(0);