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FreeBSD : Elixir -- Denial of service via uncontrolled recursion in charlist conversion (2ab3c852-d10a-4d68-be6b-80619116c33a)

medium Nessus Plugin ID 341548

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 2ab3c852-d10a-4d68-be6b-80619116c33a advisory.

 tomciopp reports:
 Uncontrolled recursion in the Elixir standard library lets an attacker who controls a list passed to inspect/1, List.to_string/1, or List.to_charlist/1 exhaust a BEAM node's memory.
 Inspect.List checks only a bounded prefix (4096 elements by default) to determine whether a list is a charlist, then attempts to convert the entire list. When a list contains a long printable prefix followed by an invalid element, the classification passes but the conversion fails. The error handling path then inspects the same list again, creating unbounded recursion that grows process memory until heap limits are exceeded or the node exhausts resources.

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://github.com/elixir-lang/elixir/releases/tag/v1.20.4

http://www.nessus.org/u?445d9582

http://www.nessus.org/u?e6380d22

Plugin Details

Severity: Medium

ID: 341548

File Name: freebsd_pkg_2ab3c852d10a4d68be6b80619116c33a.nasl

Version: 1.1

Type: Local

Published: 8/29/2026

Updated: 8/29/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.7

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2026-75758

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 5.9

Threat Score: 2

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:elixir-devel

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/28/2026

Vulnerability Publication Date: 8/28/2026

Reference Information

CVE: CVE-2026-75758