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HistoryJan 09, 2023 - 12:00 a.m.

Huawei EulerOS: Security Advisory for expat (EulerOS-SA-2023-1060)

2023-01-0900:00:00
Copyright (C) 2023 Greenbone AG
plugins.openvas.org
12
huawei
euleros
security advisory
expat
integer overflow
signed integer overflow
realloc misbehavior
namespace-separator
encoding validation

CVSS2

9

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.2

Confidence

High

EPSS

0.049

Percentile

93.0%

The remote host is missing an update for the Huawei EulerOS

# 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("1.3.6.1.4.1.25623.1.1.2.2023.1060");
  script_cve_id("CVE-2021-45960", "CVE-2022-23852", "CVE-2022-23990", "CVE-2022-25235", "CVE-2022-25236");
  script_tag(name:"creation_date", value:"2023-01-09 15:11:01 +0000 (Mon, 09 Jan 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:"9.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:C/A:C");
  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:"2022-02-23 20:55:48 +0000 (Wed, 23 Feb 2022)");

  script_name("Huawei EulerOS: Security Advisory for expat (EulerOS-SA-2023-1060)");
  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=EULEROSVIRT\-3\.0\.2\.6");

  script_xref(name:"Advisory-ID", value:"EulerOS-SA-2023-1060");
  script_xref(name:"URL", value:"https://developer.huaweicloud.com/intl/en-us/euleros/securitydetail.html?secId=EulerOS-SA-2023-1060");

  script_tag(name:"summary", value:"The remote host is missing an update for the Huawei EulerOS 'expat' package(s) announced via the EulerOS-SA-2023-1060 advisory.");

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

  script_tag(name:"insight", value:"Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.(CVE-2022-23990)

Expat (aka libexpat) before 2.4.4 has a signed integer overflow in XML_GetBuffer, for configurations with a nonzero XML_CONTEXT_BYTES.(CVE-2022-23852)

In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).(CVE-2021-45960)

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)");

  script_tag(name:"affected", value:"'expat' package(s) on Huawei EulerOS Virtualization 3.0.2.6.");

  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-3.0.2.6") {

  if(!isnull(res = isrpmvuln(pkg:"expat", rpm:"expat~2.1.0~10.h11.eulerosv2r7", rls:"EULEROSVIRT-3.0.2.6"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"expat-devel", rpm:"expat-devel~2.1.0~10.h11.eulerosv2r7", rls:"EULEROSVIRT-3.0.2.6"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"expat-static", rpm:"expat-static~2.1.0~10.h11.eulerosv2r7", rls:"EULEROSVIRT-3.0.2.6"))) {
    report += res;
  }

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

exit(0);

CVSS2

9

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.2

Confidence

High

EPSS

0.049

Percentile

93.0%