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CVE-2022-24834— Heap overflow issue with the Lua cjson library used by Redis

Quick assessment

Affected
redis redis
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Redis Labs Redis是美国Redis Labs公司的一套开源的使用ANSI C编写、支持网络、可基于内存亦可持久化的日志型、键值（Key-Value）存储数据库，并提供多种语言的API。 Redis 7.0.12之前、6.2.13之前 和 6.0.20之前版本存在安全漏洞，该漏洞源于在 Redis 中执行的特制 Lua 脚本可能会触发 cjson 库中的堆溢出，并导致堆损坏和潜在的远程代码执行。

CVSS 7.0 · High EPSS 41.14% · P99

Possible ATT&CK Techniques 1 AI

T1059.011 · Lua
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I. Basic Information for CVE-2022-24834

Vulnerability Information
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Vulnerability Title
Heap overflow issue with the Lua cjson library used by Redis
Source: CVE Program / CVE List V5
Vulnerability Description
Redis is an in-memory database that persists on disk. A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson library, and result with heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. The problem is fixed in versions 7.0.12, 6.2.13, and 6.0.20.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Redis 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Redis Labs Redis是美国Redis Labs公司的一套开源的使用ANSI C编写、支持网络、可基于内存亦可持久化的日志型、键值（Key-Value）存储数据库，并提供多种语言的API。 Redis 7.0.12之前、6.2.13之前 和 6.0.20之前版本存在安全漏洞，该漏洞源于在 Redis 中执行的特制 Lua 脚本可能会触发 cjson 库中的堆溢出，并导致堆损坏和潜在的远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
redis redis >= 7.0.0, < 7.0.12 -

II. Public POCs for CVE-2022-24834

# POC Description Source Link Shenlong Link
1 None https://github.com/convisolabs/CVE-2022-24834 POC Details
2 None https://github.com/DukeSec97/CVE-2022-24834- POC Details
AI-Generated POC Verified env Premium
Reproduced successfully in a real sandbox · Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker: VULNERABLE: redis 6.2.12 (CVE-2022-24834) - vulnerable cjson library exercised via authenticated Lua script, 20M-element JSON decoded
Reproduction recording is a Pro+ exclusive
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claude_code · 6065 chars
GitHub 复现环境（可 clone 直接跑）
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III. Intelligence Information for CVE-2022-24834

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Vendor Advisories for CVE-2022-24834 (2)

Mailing List Discussions for CVE-2022-24834 (2)

IV. Related Vulnerabilities

Same product: redis
Same vendor: redis
Same weakness: CWE-122

V. Comments for CVE-2022-24834

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