FreeBSD : redis -- Bug in XACKDEL may lead to stack overflow and potential RCE (5523394e-b889-11f0-9446-f02f7497ecda)

critical Nessus Plugin ID 272256

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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 5523394e-b889-11f0-9446-f02f7497ecda advisory.

Google Big Sleep reports:
A user can run the XACKDEL command with multiple ID's and trigger a stack buffer overflow, which may potentially lead to remote code execution.
The problem exists in Redis 8.2 or newer.
The code doesn't handle the case where the number of ID's exceeds the STREAMID_STATIC_VECTOR_LEN, and skips a reallocation, which leads to a stack buffer overflow.
An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing XACKDEL operation. This can be done using ACL to restrict XACKDEL command.

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.

Plugin Details

Severity: Critical

ID: 272256

File Name: freebsd_pkg_5523394eb88911f09446f02f7497ecda.nasl

Version: 1.2

Type: local

Family: FreeBSD Local Security Checks

Published: 11/4/2025

Updated: 11/7/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2025-62507

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:redis

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/3/2025

Vulnerability Publication Date: 11/3/2025

Reference Information

CVE: CVE-2025-62507

IAVA: 2025-A-0812

Detections

Analytics