Cyber Resilience

CVE-2023-36824

Memory Safety in Fedoraproject Fedora 37 … 38

High EPSSMemory Safety
Published
11 July 2023
Modified
10 April 2025
Patch / advisory
View advisory
CVSS Score v3.1 7.4
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.77 99.5th percentile
Risk Priority 80 floored blend · peak EPSS

Summary

CVE-2023-36824 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Fedoraproject Fedora. Its CVSS base score is 7.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked in the top 0.5% 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 7.0 prior to version 7.0.12 contains a heap overflow vulnerability in the logic that extracts key names from commands and argument lists. The flaw can be triggered by the COMMAND GETKEYS and COMMAND GETKEYSANDFLAGS subcommands or by any command whose key names are matched by ACL rules, resulting in out-of-bounds reads, heap corruption, and potential remote code execution. The issue is tracked under CWE-122, CWE-131, and CWE-787 and carries a CVSS 3.1 score of 7.4.

Authenticated users are able to exploit the condition by submitting specially crafted commands that reference variadic key-name lists. Successful exploitation can disclose heap memory contents or corrupt allocator state, enabling arbitrary code execution on the Redis server process.

The vulnerability is fixed in Redis 7.0.12. The official advisory and release notes recommend immediate upgrade; downstream distributions such as Fedora have published corresponding package updates, and NetApp has issued an advisory for affected storage products. The EPSS score has remained near its peak of 0.9084 with a current value of 0.8900.

EU & UK References

Vulnerability Data

Redis is an in-memory database that persists on disk. In Redit 7.0 prior to 7.0.12, extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap…

more

memory, heap corruption and potentially remote code execution. Several scenarios that may lead to authenticated users executing a specially crafted `COMMAND GETKEYS` or `COMMAND GETKEYSANDFLAGS`and authenticated users who were set with ACL rules that match key names, executing a specially crafted command that refers to a variadic list of key names. The vulnerability is patched in Redis 7.0.12.

CWE(s)
CWE-122CWE-131CWE-787

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1211 Exploitation for Stealth Stealth
Adversaries may exploit vulnerabilities to evade detection by hiding activity, suppressing logging, or operating within trusted or unmonitored components.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-3516Same product: Fedoraproject Fedora
CVE-2023-6246Same product: Fedoraproject Fedora
CVE-2024-21795Same product: Fedoraproject Fedora
CVE-2024-1283Same product: Fedoraproject Fedora
CVE-2023-4322Same product: Fedoraproject Fedora
CVE-2023-6779Same product: Fedoraproject Fedora
CVE-2024-4559Same product: Fedoraproject Fedora
CVE-2024-5835Same product: Fedoraproject Fedora
CVE-2024-23606Same product: Fedoraproject Fedora
CVE-2023-4016Same product: Fedoraproject Fedora

Affected Assets

redis
redis
7.0.0 — 7.0.12
fedoraproject
fedora
37, 38

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)
  • V1.4.1

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

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 full match
prevents

Secure-development practices directly require bounds checking and safe memory handling that prevent heap overflows.

ID.RA-01 partial match
prevents

Vulnerability scanning and recording can discover heap-overflow flaws but does not prevent their introduction in code.

PR.PS-02 partial match
prevents

Timely patching removes known heap-overflow instances after they exist.

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.8.28 Secure coding mostly match
degrades

Secure coding standards directly require correct buffer-size calculations.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development and acceptance can detect heap overflows before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates practices that reduce the likelihood of introducing heap overflows.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify bounds-checking and safe memory APIs that mitigate heap overflows.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture and engineering principles include memory-safety and input-validation controls that address heap overflows.

A.8.32 Change management partial match
prevents

Change management can enforce review gates that catch unsafe memory operations before deployment.

References