The version of expat installed on the remote host is prior to 2.1.0-15. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-2280 advisory.

    Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function. (CVE-2022-23990)

    A flaw was found in expat. A stack exhaustion in doctype parsing could be triggered by a file with a large     number of opening braces, resulting in a denial of service. (CVE-2022-25313)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2022:0498-1 advisory.

  - 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)

  - Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function. (CVE-2022-23990)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2022:7811 advisory.

  - Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function. (CVE-2022-23990)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9227 advisory.

    - lib: Prevent integer overflow on groupSize [CVE-2021-46143][Orabug: 33910302]

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the expat package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - 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)

  - In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for     m_groupSize. (CVE-2021-46143)

  - addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22822)

  - build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22823)

  - defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
    (CVE-2022-22824)

  - lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22825)

  - nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
    (CVE-2022-22826)

  - storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22827)

  - 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)

  - Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function. (CVE-2022-23990)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2025:22607 advisory.

    Expat is a C library for parsing XML documents.

    Security Fix(es):

    * expat: internal entity expansion (CVE-2013-0340)

    * expat: integer overflow in the doProlog function (CVE-2022-23990)

    * libexpat: expat: Improper Restriction of XML Entity Expansion Depth in libexpat (CVE-2024-8176)

    * expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small     document that is submitted for parsing (CVE-2025-59375)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the expat packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - 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)

  - Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function. (CVE-2022-23990)

  - 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)

  - xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters     into namespace URIs. (CVE-2022-25236)

  - 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)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:7811 advisory.

    Expat is a C library for parsing XML documents. The mingw-expat packages provide a port of the Expat     library for MinGW.

    The following packages have been upgraded to a later upstream version: mingw-expat (2.4.8). (BZ#2057023,     BZ#2057037, BZ#2057127)

    Security Fix(es):

    * expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)

    * expat: Namespace-separator characters in xmlns[:prefix] attribute values can lead to arbitrary code     execution (CVE-2022-25236)

    * expat: Integer overflow in storeRawNames() (CVE-2022-25315)

    * expat: Stack exhaustion in doctype parsing (CVE-2022-25313)

    * expat: Integer overflow in copyString() (CVE-2022-25314)

    * expat: Integer overflow in the doProlog function (CVE-2022-23990)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.7 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2022-4252:02 advisory.

    * expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)
      * expat: Namespace-separator characters in xmlns[:prefix] attribute values can lead to arbitrary code     execution (CVE-2022-25236)
      * expat: Integer overflow in storeRawNames() (CVE-2022-25315)
      * expat: Stack exhaustion in doctype parsing (CVE-2022-25313)
      * expat: Integer overflow in copyString() (CVE-2022-25314)
      * expat: Integer overflow in the doProlog function (CVE-2022-23990)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the expat package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - 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)

  - In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for     m_groupSize. (CVE-2021-46143)

  - addBinding in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22822)

  - build_model in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22823)

  - defineAttribute in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
    (CVE-2022-22824)

  - lookup in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22825)

  - nextScaffoldPart in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow.
    (CVE-2022-22826)

  - storeAtts in xmlparse.c in Expat (aka libexpat) before 2.4.3 has an integer overflow. (CVE-2022-22827)

  - 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)

  - Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function. (CVE-2022-23990)

  - 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)

  - xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters     into namespace URIs. (CVE-2022-25236)

  - 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)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
182625	Amazon Linux 2 : expat (ALAS-2023-2280)	Nessus	Amazon Linux Local Security Checks	10/5/2023	12/11/2024	high
158222	openSUSE 15 Security Update : expat (openSUSE-SU-2022:0498-1)	Nessus	SuSE Local Security Checks	2/22/2022	11/7/2023	critical
170780	Rocky Linux 8 : mingw-expat (RLSA-2022:7811)	Nessus	Rocky Linux Local Security Checks	1/30/2023	3/21/2023	high
158997	Oracle Linux 7 : expat (ELSA-2022-9227)	Nessus	Oracle Linux Local Security Checks	3/16/2022	10/22/2024	high
160602	EulerOS Virtualization 2.9.0 : expat (EulerOS-SA-2022-1628)	Nessus	Huawei Local Security Checks	5/5/2022	10/30/2023	critical
277137	RHEL 8 : expat (RHSA-2025:22607)	Nessus	Red Hat Local Security Checks	12/3/2025	12/3/2025	high
160143	EulerOS 2.0 SP8 : expat (EulerOS-SA-2022-1562)	Nessus	Huawei Local Security Checks	4/25/2022	10/31/2023	critical
167142	RHEL 8 : mingw-expat (RHSA-2022:7811)	Nessus	Red Hat Local Security Checks	11/9/2022	3/15/2025	critical
293270	MiracleLinux 8 : mingw-expat-2.4.8-1.el8 (AXSA:2022-4252:02)	Nessus	Miracle Linux Local Security Checks	1/20/2026	1/20/2026	critical
163220	EulerOS Virtualization 2.10.0 : expat (EulerOS-SA-2022-2022)	Nessus	Huawei Local Security Checks	7/15/2022	10/17/2023	critical

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