Debian dsa-6279 : redis - security update

high Nessus Plugin ID 315099

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Synopsis

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

Description

The remote Debian 12 / 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6279 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6279-1 [email protected] https://www.debian.org/security/ Aron Xu May 17, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : redis CVE ID : CVE-2025-67733 CVE-2026-21863 Debian Bug :

Brief introduction

CVE-2025-67733

A flaw in the Lua scripting error path allowed an authenticated user to embed CR/LF byte sequences in an error reply produced via redis.error_reply() or the Lua error() function. Because RESP uses CRLF as a frame delimiter, an injected sequence could be interpreted by the client as the start of an unrelated reply, allowing an attacker to inject arbitrary content into the response stream and tamper with data read by other commands on the same connection.

CVE-2026-21863

The cluster bus packet validation in clusterProcessPacket() did not verify that the gossip-section count and per-extension header declared by an incoming PING, PONG or MEET message actually fit within the received packet. A peer with access to the cluster bus port could send a specially crafted message whose declared lengths exceed the packet size, causing the server to read out of bounds and potentially crash, resulting in a denial of service.

For the oldstable distribution (bookworm), these problems have been fixed in version 5:7.0.15-1~deb12u7.

For the stable distribution (trixie), these problems have been fixed in version 8.0.2-3+deb13u2.

We recommend that you upgrade your redis packages.

For the detailed security status of redis please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/redis

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the redis packages.

Plugin Details

Severity: High

ID: 315099

File Name: debian_DSA-6279.nasl

Version: 1.3

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 5/17/2026

Updated: 5/17/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2025-67733

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:redis, p-cpe:/a:debian:debian_linux:redis-tools, p-cpe:/a:debian:debian_linux:redis-server, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:redis-sentinel

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/17/2026

Vulnerability Publication Date: 2/23/2026

Reference Information

CVE: CVE-2025-67733, CVE-2026-21863

Detections

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