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TI-2022-08647 Aliases CVE-2022-24834

Heap overflow issue with the Lua cjson library used by Redis

Priority HIGH 73CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 2 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-122 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.41409 98th percentileScored 2026-11-07
Fix Partial redis (redis): 7.0.12, 6.2.13, 6.0.20Red Hat: 2 advisoriesRed Hat: 2 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Redisredis7.0.0 to before 7.0.12; 6.2.0 to before 6.2.13; 6.0.0 to before 6.0.207.0.12, 6.2.13, 6.0.20Patch availableCNA
  • redis VendorRedis Affected 7.0.0 to before 7.0.12; 6.2.0 to before 6.2.13; 6.0.0 to before 6.0.20 Fixed in 7.0.12, 6.2.13, 6.0.20 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:*2.6.0 to before 6.0.20; 6.2.0 to before 6.2.13; 7.0.0 to before 7.0.12VulnerableRedis
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*37VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*38VulnerableFedoraproject
  • cpe:2.3:a:redis:redis:*:*:*:*:*:*:*:* Versions 2.6.0 to before 6.0.20; 6.2.0 to before 6.2.13; 7.0.0 to before 7.0.12 Vulnerable ·Redis
  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject

Remediation

  • Fix · CNA redis (redis) Fixed in 7.0.12, 6.2.13, 6.0.20

Red Hat 2 advisories

  • RHSA-2025:0693 Released 2025-01-27 · Red Hat rating Important
    redis security update
    • Red Hat Enterprise Linux AppStream (v. 9) redis-6.2.17-1.el9_5, redis-devel-6.2.17-1.el9_5, redis-doc-6.2.17-1.el9_5
  • RHSA-2025:0595 Released 2025-01-22 · Red Hat rating Important
    redis:6 security update
    • Red Hat Enterprise Linux AppStream (v. 8) redis-6.2.17-1.module+el8.10.0+22680+748527fd.aarch64::redis:6, redis-6.2.17-1.module+el8.10.0+22680+748527fd.ppc64le::redis:6, redis-6.2.17-1.module+el8.10.0+22680+748527fd.s390x::redis:6 +7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat 3scale API Management Platform 2AffectedNo fix yet
Red Hat Software CollectionsAffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2025:0595
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:0693
Not affected: 10 products
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Ansible Automation Platform 1.2
  • Red Hat Enterprise Linux 9
  • Red Hat Fuse 7
  • Red Hat OpenStack Platform 16.1
  • Red Hat OpenStack Platform 16.2
  • Red Hat OpenStack Platform 17.0
  • Red Hat OpenStack Platform 17.1
  • Red Hat OpenStack Platform 18.0
  • Red Hat Satellite 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-24834

References

Advisory 3

Other 1

  • TI-2022-00463 Missing authorization in Debian redis KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-31759 Redis Lua Use-After-Free may lead to remote code execution CVSS 3.1CRITICAL 10.0
  • TI-2023-18618 Heap overflow in COMMAND GETKEYS and ACL evaluation in Redis CVSS 3.1HIGH 8.8
  • TI-2024-20813 Lua library commands may lead to stack overflow and RCE in Redis CVSS 3.1HIGH 8.8
  • TI-2022-08549 Lua scripts can be manipulated to overcome ACL rules in Redis CVSS 3.1HIGH 7.8
  • TI-2023-08708 Integer overflow in multiple Redis commands can lead to denial-of-service CVSS 3.1MEDIUM 5.5
See all 45 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences