CVE-2022-36021
Redis string pattern matching can be abused to achieve Denial of Service
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Redis is an in-memory database that persists on disk. Authenticated users can use string matching commands (like `SCAN` or `KEYS`) with a specially crafted pattern to trigger a denial-of-service attack on Redis, causing it to hang and consume 100% CPU time. The problem is fixed in Redis versions 6.0.18, 6.2.11, 7.0.9.
A vulnerability was found in Redis. This flaw allows an authenticated to use string matching commands (like SCAN or KEYS) with a specially crafted pattern to trigger a denial of service attack on Redis, causing it to hang and consume 100% of CPU time.
Seiya Nakata and Yudai Fujiwara discovered that Redis incorrectly handled certain specially crafted Lua scripts. An attacker could possibly use this issue to cause heap corruption and execute arbitrary code. SeungHyun Lee discovered that Redis incorrectly handled specially crafted commands. An attacker could possibly use this issue to trigger an integer overflow, which might cause Redis to allocate impossible amounts of memory, resulting in a denial of service via an application crash.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2022-07-15 CVE Reserved
- 2023-03-01 CVE Published
- 2025-03-07 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-407: Inefficient Algorithmic Complexity
CAPEC
References (4)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/redis/redis/commit/dcbfcb916ca1a269b3feef86ee86835294758f84 | 2023-11-07 |
| URL | Date | SRC |
|---|---|---|
| https://github.com/redis/redis/security/advisories/GHSA-jr7j-rfj5-8xqv | 2023-11-07 | |
| https://access.redhat.com/security/cve/CVE-2022-36021 | 2025-01-22 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2174305 | 2025-01-22 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Redis Search vendor "Redis" | Redis Search vendor "Redis" for product "Redis" | < 6.0.18 Search vendor "Redis" for product "Redis" and version " < 6.0.18" | - |
Affected
| ||||||
| Redis Search vendor "Redis" | Redis Search vendor "Redis" for product "Redis" | >= 6.2.0 < 6.2.11 Search vendor "Redis" for product "Redis" and version " >= 6.2.0 < 6.2.11" | - |
Affected
| ||||||
| Redis Search vendor "Redis" | Redis Search vendor "Redis" for product "Redis" | >= 7.0.0 < 7.0.9 Search vendor "Redis" for product "Redis" and version " >= 7.0.0 < 7.0.9" | - |
Affected
| ||||||