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FreeBSD : Jinja2 -- Vulnerable to HTML attribute injection when passing user input as keys to xmlattr filter (04c9c3f8-5ed3-11ef-8262-b0416f0c4c67)

medium Nessus Plugin ID 205872

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 04c9c3f8-5ed3-11ef-8262-b0416f0c4c67 advisory.

 [email protected] reports:
 Jinja is an extensible templating engine. The `xmlattr` filter in affected versions of Jinja accepts keys containing non-attribute characters. XML/HTML attributes cannot contain spaces, `/`, `>`, or `=`, as each would then be interpreted as starting a separate attribute. If an application accepts keys (as opposed to only values) as user input, and renders these in pages that other users see as well, an attacker could use this to inject other attributes and perform XSS. The fix for CVE-2024-22195 only addressed spaces but not other characters. Accepting keys as user input is now explicitly considered an unintended use case of the `xmlattr` filter, and code that does so without otherwise validating the input should be flagged as insecure, regardless of Jinja version. Accepting
 _values_ as user input continues to be safe. This vulnerability is fixed in 3.1.4.

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

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

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2024-34064

http://www.nessus.org/u?aba1ad6d

Plugin Details

Severity: Medium

ID: 205872

File Name: freebsd_pkg_04c9c3f85ed311ef8262b0416f0c4c67.nasl

Version: 1.1

Type: local

Published: 8/20/2024

Updated: 8/20/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2024-34064

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.7

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

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:py39-jinja2, p-cpe:/a:freebsd:freebsd:py311-jinja2, p-cpe:/a:freebsd:freebsd:py310-jinja2, cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:py38-jinja2

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 8/20/2024

Vulnerability Publication Date: 5/6/2024

Reference Information

CVE: CVE-2024-34064