CVE-2022-24834— Heap overflow issue with the Lua cjson library used by Redis
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
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
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 POCPremium
No public POC found.
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- https://github.com/redis/redis/security/advisories/GHSA-p8x2-9v9q-c838x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2022-24834
IV. Related Vulnerabilities
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Redis: Bug in XACKDEL may lead to stack overflow and potenti - CVE-2025-49844
Redis Lua Use-After-Free may lead to remote code execution
Same vendor: redis
- CVE-2026-25243
redis-server RESTORE invalid memory access may allow remote - CVE-2026-23631
redis-server Lua use-after-free may allow remote code execut - CVE-2026-23479
redis-server use-after-free in unblock client flow may allow - CVE-2025-62507
Redis: Bug in XACKDEL may lead to stack overflow and potenti - CVE-2025-49844
Redis Lua Use-After-Free may lead to remote code execution
Same weakness: CWE-122
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V. Comments for CVE-2022-24834
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