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FreeBSD : www/varnish-libvmod-digest -- base64 decoding vulnerability (64bec4c7-d785-11f0-a1c0-0050569f0b83)

medium Nessus Plugin ID 278587

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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 64bec4c7-d785-11f0-a1c0-0050569f0b83 advisory.

 varnish developers report:
 Common usage of vmod-digest is for basic HTTP authentication, in which case it may be possible for an attacker to circumvent the authentication check. If the decoded result string is somehow being made visible to the attacker (for example the result of the decoding is added to a response header), then there is the potential for information disclosure from reading out of band workspace data.

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://vinyl-cache.org/security/VSV00012.html

http://www.nessus.org/u?6860d08c

Plugin Details

Severity: Medium

ID: 278587

File Name: freebsd_pkg_64bec4c7d78511f0a1c00050569f0b83.nasl

Version: 1.1

Type: local

Published: 12/12/2025

Updated: 12/12/2025

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-2023-41104

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:varnish-libvmod-digest

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/12/2025

Vulnerability Publication Date: 8/23/2023

Reference Information

CVE: CVE-2023-41104