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Exploited vulnerability · CISA KEV

Is CVE-2022-0543 exploited? Yes: in CISA KEV since 28 Mar 2022

Gociux · Redis Debian-specific Redis Servers · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2022-0543, Debian-specific Redis Server Lua Sandbox Escape Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 28 Mar 2022, 38 days after it was published. It affects Redis Debian-specific Redis Servers. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 28 Mar 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity10CVSS 3.1 · critical
US federal due18 Apr 2022BOD 22-01 deadline

What it is

Redis is prone to a (Debian-specific) Lua sandbox escape, which could result in remote code execution.

VendorRedis (1 exploited CVE in KEV)
ProductDebian-specific Redis Servers
VulnerabilityDebian-specific Redis Server Lua Sandbox Escape Vulnerability
WeaknessCWE-862
Published18 Feb 2022
Added to KEV28 Mar 2022
Reported by (CNA)debian

What to do

  1. Check whether you run it. Look for Debian-specific Redis Servers in your asset inventory, including appliances and cloud images. Stack check lists every exploited Redis CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 18 Feb 2022.
  4. Get told next time. Email alerts when CISA adds a CVE for Redis.

References

Questions

Is CVE-2022-0543 being exploited?

Yes. CISA added CVE-2022-0543 to the Known Exploited Vulnerabilities catalog on 28 Mar 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2022-0543 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2022-0543?

Apply updates per vendor instructions. Check Redis's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Debian-specific Redis Servers and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in March 2022 · act-now radar.

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