Security Resilience

CVE-2023-22458

Memory Safety in Redis 6.2.0 – 6.2.9

High EPSSMemory Safety
Published
20 January 2023
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3.1 5.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.72 99.4th percentile
Risk Priority 70 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-22458 is a medium-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Redis Redis. Its CVSS base score is 5.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique LSA Secrets (T1003.004); ranked in the top 0.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

Redis is an in-memory database that persists on disk. The vulnerability is an integer overflow (CWE-190) that allows an authenticated user to supply specially crafted arguments to the HRANDFIELD or ZRANDMEMBER commands, triggering an assertion failure that crashes the server. It affects Redis versions 6.2.0 up to but not including 6.2.9 and versions 7.0.0 up to but not including 7.0.8.

An attacker with a valid low-privileged local account on the Redis host can execute these commands to cause a denial of service that renders the database unavailable. The CVSS 5.5 vector reflects local access, low attack complexity, and high impact on availability with no effect on confidentiality or integrity.

The official Redis advisories and release notes for versions 6.2.9 and 7.0.8 state that users should upgrade immediately; the commits that correct the integer handling are included in those releases, and no workarounds are documented.

The EPSS score rose from a low baseline to a peak of 0.6777 (current value 0.5124), indicating that exploitation interest increased after disclosure and that the issue merits renewed attention.

EU & UK References

Vulnerability Data

Redis is an in-memory database that persists on disk. Authenticated users can issue a `HRANDFIELD` or `ZRANDMEMBER` command with specially crafted arguments to trigger a denial-of-service by crashing Redis with an assertion failure. This problem affects Redis versions 6.2 or…

more

newer up to but not including 6.2.9 as well as versions 7.0 up to but not including 7.0.8. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CWE(s)
CWE-190

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
attack.mitre.org →
T1008 Fallback Channels Command And Control
Adversaries may use fallback or alternate communication channels if the primary channel is compromised or inaccessible in order to maintain reliable command and control and to avoid data transfer thresholds.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-25155Same product: Redis Redis
CVE-2025-46817Same product: Redis Redis
CVE-2025-46819Same product: Redis Redis
CVE-2025-32023Same product: Redis Redis
CVE-2026-23479Same product: Redis Redis
CVE-2026-23631Same product: Redis Redis
CVE-2025-27151Same product: Redis Redis
CVE-2024-31449Same product: Redis Redis
CVE-2025-62507Same product: Redis Redis
CVE-2026-25243Same product: Redis Redis

Affected Assets

redis
redis
6.2.0 — 6.2.9 · 7.0.0 — 7.0.8

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.2.6

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly require use of safe arithmetic, bounds checks, and testing that prevent integer overflows.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References