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EulerOS Virtualization 2.15.1 : python3 (EulerOS-SA-2026-4569)

medium Nessus Plugin ID 377445

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)

 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)

 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)

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

 When passing data to the b64decode(), standard_b64decode(), and urlsafe_b64decode() functions in the 'base64' module the characters '+/' will always be accepted, regardless of the value of 'altchars' parameter, typically used to establish an 'alternative base64 alphabet' such as the URL safe alphabet.
 This behavior matches what is recommended in earlier base64 RFCs, but newer RFCs now recommend either dropping characters outside the specified base64 alphabet or raising an error. The old behavior has the possibility of causing data integrity issues.This behavior can only be insecure if your application uses an alternate base64 alphabet (without '+/'). If your application does not use the 'altchars' parameter or the urlsafe_b64decode() function, then your application does not use an alternative base64 alphabet.The attached patches DOES NOT make the base64-decode behavior raise an error, as this would be a change in behavior and break existing programs. Instead, the patch deprecates the behavior which will be replaced with the newly recommended behavior in a future version of Python. Users are recommended to mitigate by verifying user-controlled inputs match the base64 alphabet they are expecting or verify that their application would not be affected if the b64decode() functions accepted '+' or '/' outside of altchars.(CVE-2025-12781)

 When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters within cookie names, values, and parameters.(CVE-2026-0672)

 The poplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects commands containing control characters.(CVE-2025-15367)

 The email module, specifically the 'BytesGenerator' class, didn't properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized. This is only applicable if using 'LiteralHeader' writing headers that don't respect email folding rules, the new behavior will reject the incorrectly folded headers in 'BytesGenerator'.(CVE-2026-1299)

 User-controlled header names and values containing newlines can allow injecting HTTP headers.(CVE-2026-0865)

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?706679f0

Plugin Details

Severity: Medium

ID: 377445

File Name: EulerOS_SA-2026-4569.nasl

Version: 1.1

Type: Local

Published: 11/7/2026

Updated: 11/7/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

Percentile: 95.59

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2025-12781

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

CVSS Score Source: CVE-2025-13836

Vulnerability Information

CPE: cpe:/o:huawei:euleros:uvp:2.15.1, 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: 11/5/2026

Vulnerability Publication Date: 6/26/2025

Reference Information

CVE: CVE-2025-12084, CVE-2025-12781, CVE-2025-13836, CVE-2025-13837, CVE-2025-15367, CVE-2025-6075, CVE-2026-0672, CVE-2026-0865, CVE-2026-1299