CPython 3.9 and earlier doesn't disallow configuring an empty list ("[]") for SSLContext.set_npn_protocols() which is an invalid value for the underlying OpenSSL API. This results in a buffer over-read when NPN is used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity due to NPN being not widely used and specifying an empty list likely being uncommon in-practice (typically a protocol name would be configured).

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2025:1001 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2024-5642:
    CPython 3.9 and earlier doesn't disallow configuring an empty list ([]) for     SSLContext.set_npn_protocols() which is an invalid value for the underlying OpenSSL API. This results in a     buffer over-read when NPN is used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity     due to NPN being not widely used and specifying an empty list likely being uncommon in-practice (typically     a protocol name would be configured).

    CVE-2024-9287:
    A vulnerability has been found in the CPython venv module and CLI where path names provided when creating     a virtual environment were not quoted properly, allowing the creator to inject commands into virtual     environment activation scripts (ie source venv/bin/activate). This means that attacker-controlled     virtual environments are able to run commands when the virtual environment is activated. Virtual     environments which are not created by an attacker or which aren't activated before being used (ie     ./venv/bin/python) are not affected.

    CVE-2024-11168:
    The urllib.parse.urlsplit() and urlparse() functions improperly validated bracketed hosts ([]), allowing     hosts that weren't IPv6 or IPvFuture. This behavior was not conformant to RFC 3986 and potentially enabled     SSRF if a URL is processed by more than one URL parser.

    CVE-2025-0938:
    The Python standard library functions urllib.parse.urlsplit and urlparse accepted domain names that     included square brackets which isn't valid according to RFC 3986. Square brackets are only meant to be     used as delimiters for specifying IPv6 and IPvFuture hosts in URLs. This could result in differential     parsing across the Python URL parser and other specification-compliant URL parsers.

    CVE-2025-4138:
    Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination     directory, and the modification of some file metadata.


    You are affected by this vulnerability if using the tarfilemodule to extract untrusted tar archives     using TarFile.extractall()or TarFile.extract()using the filter=parameter with a value of dataor     tar. See the tarfile  extraction filters documentation     https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information.

    Note that for Python 3.14 or later the default value of filter=changed from no filtering to data, so     if you are relying on this new default behavior then your usage is also affected.

    Note that none of these vulnerabilities significantly affect the installation of source distributions     which are tar archives as source distributions already allow arbitrary code execution during the build     process. However when evaluating source distributions it's important to avoid installing source     distributions with suspicious links.

    CVE-2025-4330:
    Allows the extraction filter to be ignored, allowing symlink targets to point outside the destination     directory, and the modification of some file metadata.


    You are affected by this vulnerability if using the tarfilemodule to extract untrusted tar archives     using TarFile.extractall()or TarFile.extract()using the filter=parameter with a value of dataor     tar. See the tarfile  extraction filters documentation     https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information.

    Note that for Python 3.14 or later the default value of filter=changed from no filtering to data, so     if you are relying on this new default behavior then your usage is also affected.

    Note that none of these vulnerabilities significantly affect the installation of source distributions     which are tar archives as source distributions already allow arbitrary code execution during the build     process. However when evaluating source distributions it's important to avoid installing source     distributions with suspicious links.

    CVE-2025-4435:
    When using a TarFile.errorlevel = 0and extracting with a filter the documented behavior is that any     filtered members would be skipped and not extracted. However the actual behavior of TarFile.errorlevel =     0in affected versions is that the member would still be extracted and not skipped.

    CVE-2025-4516:
    There is an issue in CPython when using bytes.decode(unicode_escape, error=ignore|replace). If you are     not using the unicode_escape encoding or an error handler your usage is not affected. To work-around     this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except     catching the DecodeError.

    CVE-2025-4517:
    Allows arbitrary filesystem writes outside the extraction directory during extraction with filter=data.


    You are affected by this vulnerability if using the tarfilemodule to extract untrusted tar archives     using TarFile.extractall()or TarFile.extract()using the filter=parameter with a value of dataor     tar. See the tarfile  extraction filters documentation     https://docs.python.org/3/library/tarfile.html#tarfile-extraction-filter for more information.

    Note that for Python 3.14 or later the default value of filter=changed from no filtering to data, so     if you are relying on this new default behavior then your usage is also affected.

    Note that none of these vulnerabilities significantly affect the installation of source distributions     which are tar archives as source distributions already allow arbitrary code execution during the build     process. However when evaluating source distributions it's important to avoid installing source     distributions with suspicious links.

    CVE-2025-6069:
    The html.parser.HTMLParser class had worse-case quadratic complexity when processing certain crafted     malformed inputs potentially leading to amplified denial-of-service.

    CVE-2025-6075:
    If the value passed to os.path.expandvars() is user-controlled a     performance degradation is possible when expanding environment     variables.

    CVE-2025-8291:
    The 'zipfile' module would not check the validity of the ZIP64 End of     Central Directory (EOCD) Locator record offset value would not be used to     locate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be     assumed to be the previous record in the ZIP archive. This could be abused     to create ZIP archives that are handled differently by the 'zipfile' module     compared to other ZIP implementations.


    Remediation maintains this behavior, but checks that the offset specified     in the ZIP64 EOCD Locator record matches the expected value.

Tenable has extracted the preceding description block directly from the Tencent 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 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11589:05 advisory.

    * python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used (CVE-2024-5642)
      * cpython: Python HTMLParser quadratic complexity (CVE-2025-6069)
      * cpython: python: Python zipfile End of Central Directory (EOCD) Locator record offset not checked     (CVE-2025-8291)
      * python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

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.

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11636:01 advisory.

    * python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used (CVE-2024-5642)
      * python: Virtual environment (venv) activation scripts don't quote paths (CVE-2024-9287)
      * python: Improper validation of IPv6 and IPvFuture addresses (CVE-2024-11168)
      * python: cpython: URL parser allowed square brackets in domain names (CVE-2025-0938)
      * cpython: python: CPython DecodeError Handling Vulnerability (CVE-2025-4516)
      * cpython: Tarfile extracts filtered members when errorlevel=0 (CVE-2025-4435)
      * cpython: python: Extraction filter bypass for linking outside extraction directory (CVE-2025-4330)
      * python: cpython: Arbitrary writes via tarfile realpath overflow (CVE-2025-4517)
      * cpython: python: Bypassing extraction filter to create symlinks to arbitrary targets outside     extraction directory (CVE-2025-4138)
      * cpython: Python HTMLParser quadratic complexity (CVE-2025-6069)
      * cpython: python: Python zipfile End of Central Directory (EOCD) Locator record offset not checked     (CVE-2025-8291)
      * python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

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.

CPython 3.9 and earlier doesn't disallow configuring an empty list ([]) for SSLContext.set_npn_protocols() which is an invalid value for the underlying OpenSSL API. This results in a buffer over-read when NPN is used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity due to NPN being not widely used and specifying an empty list likely being uncommon in-practice (typically a protocol name would be configured).

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-23530 advisory.

    mod_wsgi     numpy     python39     [3.9.25-2]
    - Add explicit BR: libxcrypt-devel
    - Properly apply exported CFLAGS for dtrace/systemtap builds
    - Update to Python 3.9.25
    - Move _sysconfigdata_d_linux*.py to the debug subpackage
    - Fedora contributions by:
          Bjorn Esser <besser82@fedoraproject.org>           Charalampos Stratakis <cstratak@redhat.com>           Karolina Surma <ksurma@redhat.com>           Tomas Orsava <torsava@redhat.com>           Tomas Hrnciar <thrnciar@redhat.com>     Resolves: RHEL-128539

    python3x-pip     python3x-setuptools     python3x-six     python-cffi     python-chardet     python-cryptography     python-idna     python-lxml     python-ply     python-psutil     python-psycopg2     python-pycparser     python-PyMySQL     python-pysocks     python-requests     python-toml     python-urllib3     python-wheel     PyYAML     scipy     Cython     pybind11     pytest     python3x-pyparsing     python-attrs     python-iniconfig     python-more-itertools     python-packaging     python-pluggy     python-py     python-wcwidth

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.

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:23342 advisory.

    * python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used (CVE-2024-5642)
      * cpython: Python HTMLParser quadratic complexity (CVE-2025-6069)
      * cpython: python: Python zipfile End of Central Directory (EOCD) Locator record offset not checked     (CVE-2025-8291)
      * python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:23530 advisory.

    * python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used (CVE-2024-5642)
      * python: Virtual environment (venv) activation scripts don't quote paths (CVE-2024-9287)
      * python: Improper validation of IPv6 and IPvFuture addresses (CVE-2024-11168)
      * python: cpython: URL parser allowed square brackets in domain names (CVE-2025-0938)
      * cpython: python: CPython DecodeError Handling Vulnerability (CVE-2025-4516)
      * cpython: Tarfile extracts filtered members when errorlevel=0 (CVE-2025-4435)
      * cpython: python: Extraction filter bypass for linking outside extraction directory (CVE-2025-4330)
      * python: cpython: Arbitrary writes via tarfile realpath overflow (CVE-2025-4517)
      * cpython: python: Bypassing extraction filter to create symlinks to arbitrary targets outside     extraction directory (CVE-2025-4138)
      * cpython: Python HTMLParser quadratic complexity (CVE-2025-6069)
      * cpython: python: Python zipfile End of Central Directory (EOCD) Locator record offset not checked     (CVE-2025-8291)
      * python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:23342 advisory.

    * python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used (CVE-2024-5642)

    * cpython: Python HTMLParser quadratic complexity (CVE-2025-6069)

    * cpython: python: Python zipfile End of Central Directory (EOCD) Locator record offset not checked     (CVE-2025-8291)

    * python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

Tenable has extracted the preceding description block directly from the RockyLinux 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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-23342 advisory.

    [3.9.25-2.0.1]
    - Remove upstream URL reference

    [3.9.25-2]
    - Move _sysconfigdata_d_linux*.py to the debug subpackage

    [3.9.25-1]
    - Update to Python 3.9.25

    [3.9.24-1]
    - Update to Python 3.9.24

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.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:23342 advisory.

    Python is an interpreted, interactive, object-oriented programming language, which includes modules,     classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to     many system calls and libraries, as well as to various windowing systems.

    Security Fix(es):

    * python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used (CVE-2024-5642)

    * cpython: Python HTMLParser quadratic complexity (CVE-2025-6069)

    * cpython: python: Python zipfile End of Central Directory (EOCD) Locator record offset not checked     (CVE-2025-8291)

    * python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

    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.

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:23530 advisory.

    * python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used (CVE-2024-5642)

    * python: Virtual environment (venv) activation scripts don't quote paths (CVE-2024-9287)

    * python: Improper validation of IPv6 and IPvFuture addresses (CVE-2024-11168)

    * python: cpython: URL parser allowed square brackets in domain names (CVE-2025-0938)

    * cpython: python: CPython DecodeError Handling Vulnerability (CVE-2025-4516)

    * cpython: Tarfile extracts filtered members when errorlevel=0 (CVE-2025-4435)

    * cpython: python: Extraction filter bypass for linking outside extraction directory (CVE-2025-4330)

    * python: cpython: Arbitrary writes via tarfile realpath overflow (CVE-2025-4517)

    * cpython: python: Bypassing extraction filter to create symlinks to arbitrary targets outside extraction     directory (CVE-2025-4138)

    * cpython: Python HTMLParser quadratic complexity (CVE-2025-6069)

    * cpython: python: Python zipfile End of Central Directory (EOCD) Locator record offset not checked     (CVE-2025-8291)

    * python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

Tenable has extracted the preceding description block directly from the RockyLinux 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 Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:23530 advisory.

    Python is an interpreted, interactive, object-oriented programming language, which includes modules,     classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to     many system calls and libraries, as well as to various windowing systems.

    Security Fix(es):

    * python: Invalid value for OpenSSL API may cause Buffer over-read when NPN is used (CVE-2024-5642)

    * python: Virtual environment (venv) activation scripts don't quote paths (CVE-2024-9287)

    * python: Improper validation of IPv6 and IPvFuture addresses (CVE-2024-11168)

    * python: cpython: URL parser allowed square brackets in domain names (CVE-2025-0938)

    * cpython: python: CPython DecodeError Handling Vulnerability (CVE-2025-4516)

    * cpython: Tarfile extracts filtered members when errorlevel=0 (CVE-2025-4435)

    * cpython: python: Extraction filter bypass for linking outside extraction directory (CVE-2025-4330)

    * python: cpython: Arbitrary writes via tarfile realpath overflow (CVE-2025-4517)

    * cpython: python: Bypassing extraction filter to create symlinks to arbitrary targets outside extraction     directory (CVE-2025-4138)

    * cpython: Python HTMLParser quadratic complexity (CVE-2025-6069)

    * cpython: python: Python zipfile End of Central Directory (EOCD) Locator record offset not checked     (CVE-2025-8291)

    * python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

    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.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - CPython 3.9 and earlier doesn't disallow configuring an empty list ([]) for     SSLContext.set_npn_protocols() which is an invalid value for the underlying OpenSSL API. This results in a     buffer over-read when NPN is used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity     due to NPN being not widely used and specifying an empty list likely being uncommon in-practice (typically     a protocol name would be configured). (CVE-2024-5642)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of python installed on the remote host is prior to 2.7.18-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-2744 advisory.

    CPython 3.9 and earlier doesn't disallow configuring an empty list for SSLContext.set_npn_protocols()     which is an invalid value for the underlying OpenSSL API. This results in a buffer over-read when NPN is     used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity due to NPN being not widely     used and specifying an empty list likely being uncommon in-practice (typically a protocol name would be     configured). (CVE-2024-5642)

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

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

The version of python3 installed on the remote host is prior to 3.7.16-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-2743 advisory.

    CPython 3.9 and earlier doesn't disallow configuring an empty list for SSLContext.set_npn_protocols()     which is an invalid value for the underlying OpenSSL API. This results in a buffer over-read when NPN is     used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity due to NPN being not widely     used and specifying an empty list likely being uncommon in-practice (typically a protocol name would be     configured). (CVE-2024-5642)

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

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

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:3470-1 advisory.

    - CVE-2024-6923: Fixed uncontrolled CPU resource consumption when in http.cookies module (bsc#1228780).
    - CVE-2024-5642: Fixed buffer overread when NPN is used and invalid values are sent to the OpenSSL API     (bsc#1227233).
    - CVE-2024-7592: Fixed Email header injection due to unquoted newlines (bsc#1229596).
    - CVE-2024-6232: excessive backtracking when parsing tarfile headers leads to ReDoS. (bsc#1230227)

    Bug fixes:

    - %{profileopt} variable is set according to the variable %{do_profiling} (bsc#1227999).
    - Stop using %%defattr, it seems to be breaking proper executable attributes on /usr/bin/ scripts     (bsc#1227378).
    - Remove %suse_update_desktop_file macro as it is not useful any more.

Tenable has extracted the preceding description block directly from the SUSE 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 SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:3353-1 advisory.

    - CVE-2024-5642: Fixed invalid value sent to underlying OpenSSL API may cause a buffer overread when NPN     is used (bsc#1227233)

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

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

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:3076-1 advisory.

    Security issues fixed:

    - CVE-2024-6923: Fixed email header injection due to unquoted newlines (bsc#1228780)
    - CVE-2024-5642: Removed support for anything but OpenSSL 1.1.1 or newer (bsc#1227233)

    Non-security issues fixed:

    - Fixed executable bits for /usr/bin/idle* (bsc#1227378).
    - Improve python reproducible builds (bsc#1227999)

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

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

ID	Name	Product	Family	Severity
284642	TencentOS Server 3: python39:3.9 (TSSA-2025:1001)	Nessus	Tencent Local Security Checks	medium
283371	MiracleLinux 9 : python3.9-3.9.25-2.el9_7 (AXSA:2025-11589:05)	Nessus	Miracle Linux Local Security Checks	medium
282812	MiracleLinux 8 : python39:3.9 (AXSA:2025-11636:01)	Nessus	Miracle Linux Local Security Checks	medium
504914	Siemens Ruggedcom ROX Improper Input Validation (CVE-2024-5642)	Tenable OT Security	Tenable.ot	medium
279709	Oracle Linux 8 : python39:3.9 (ELSA-2025-23530)	Nessus	Oracle Linux Local Security Checks	medium
279620	AlmaLinux 9 : python3.9 (ALSA-2025:23342)	Nessus	Alma Linux Local Security Checks	low
279551	AlmaLinux 8 : python39:3.9 (ALSA-2025:23530)	Nessus	Alma Linux Local Security Checks	medium
279403	RockyLinux 9 : python3.9 (RLSA-2025:23342)	Nessus	Rocky Linux Local Security Checks	low
279379	Oracle Linux 9 : python3.9 (ELSA-2025-23342)	Nessus	Oracle Linux Local Security Checks	low
279115	RHEL 9 : python3.9 (RHSA-2025:23342)	Nessus	Red Hat Local Security Checks	low
279075	RockyLinux 8 : python39:3.9 (RLSA-2025:23530)	Nessus	Rocky Linux Local Security Checks	medium
279048	RHEL 8 : python39:3.9 (RHSA-2025:23530)	Nessus	Red Hat Local Security Checks	medium
230478	Linux Distros Unpatched Vulnerability : CVE-2024-5642	Nessus	Misc.	medium
214982	Amazon Linux 2 : python (ALAS-2025-2744)	Nessus	Amazon Linux Local Security Checks	medium
214981	Amazon Linux 2 : python3 (ALAS-2025-2743)	Nessus	Amazon Linux Local Security Checks	medium
207883	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python3 (SUSE-SU-2024:3470-1)	Nessus	SuSE Local Security Checks	high
207575	SUSE SLES12 Security Update : python36 (SUSE-SU-2024:3353-1)	Nessus	SuSE Local Security Checks	medium
206433	SUSE SLES15 / openSUSE 15 Security Update : python39 (SUSE-SU-2024:3076-1)	Nessus	SuSE Local Security Checks	medium

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CVE-2024-5642

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