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EulerOS Virtualization 2.12.1 : python3 (EulerOS-SA-2026-1455)

medium Nessus Plugin ID 302720

Synopsis

The remote EulerOS Virtualization host is missing multiple security updates.

Description

According to the versions of the python3 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

 When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.(CVE-2025-12084)

 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.(CVE-2025-8291)

 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)

 When reading an HTTP response from a server, if no read amount is specified, the default behavior will be to use Content-Length. This allows a malicious server to cause the client to read large amounts of data into memory, potentially causing OOM or other DoS.(CVE-2025-13836)

 When loading a plist file, the plistlib module reads data in size specified by the file itself, meaning a malicious file can cause OOM and DoS issues(CVE-2025-13837)

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

 During an address list folding when a separating comma ends up on a folded line and that line is to be unicode-encoded then the separator itself is also unicode-encoded. Expected behavior is that the separating comma remains a plan comma. This can result in the address header being misinterpreted by some mail servers.(CVE-2025-1795)

 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-2025-4516)

 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 'data'or '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 'data'or '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-2025-4138)

 There is a defect in the CPython tarfile module affecting the TarFile extraction and entry enumeration APIs. The tar implementation would process tar archives with negative offsets without error, resulting in an infinite loop and deadlock during the parsing of maliciously crafted tar archives. This vulnerability can be mitigated by including the following patch after importing the tarfile module: https://gist.github.com/sethmlarson/1716ac5b82b73dbcbf23ad2eff8b33e1(CVE-2025-8194)

 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 'data'or '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-2025-4517)

 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-2025-4435)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization python3 security advisory.

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

Solution

Update the affected python3 packages.

See Also

http://www.nessus.org/u?1d40707b

Plugin Details

Severity: Medium

ID: 302720

File Name: EulerOS_SA-2026-1455.nasl

Version: 1.1

Type: local

Published: 3/17/2026

Updated: 3/17/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2025-13836

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 2.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Vulnerability Information

CPE: cpe:/o:huawei:euleros:uvp:2.12.1, p-cpe:/a:huawei:euleros:python3-fgo, p-cpe:/a:huawei:euleros:python3-unversioned-command, p-cpe:/a:huawei:euleros:python3

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/16/2026

Vulnerability Publication Date: 6/27/2024

Reference Information

CVE: CVE-2024-5642, CVE-2025-12084, CVE-2025-13836, CVE-2025-13837, CVE-2025-1795, CVE-2025-4138, CVE-2025-4330, CVE-2025-4435, CVE-2025-4516, CVE-2025-4517, CVE-2025-6069, CVE-2025-8194, CVE-2025-8291