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Exploited vulnerability · CISA KEV

Is CVE-2022-36804 exploited? Yes: in CISA KEV since 30 Sep 2022

Gociux · Atlassian Bitbucket Server and Data Center · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2022-36804, Atlassian Bitbucket Server and Data Center Command Injection Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 30 Sep 2022, 36 days after it was published. It affects Atlassian Bitbucket Server and Data Center. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 30 Sep 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity8.8CVSS 3.1 · high
US federal due21 Oct 2022BOD 22-01 deadline

What it is

Multiple API endpoints of Atlassian Bitbucket Server and Data Center contain a command injection vulnerability where an attacker with access to a public Bitbucket repository, or with read permissions to a private one, can execute code by sending a malicious HTTP request.

VendorAtlassian (14 exploited CVEs in KEV)
ProductBitbucket Server and Data Center
VulnerabilityAtlassian Bitbucket Server and Data Center Command Injection Vulnerability
WeaknessCWE-78, CWE-88, CWE-158
Published25 Aug 2022
Added to KEV30 Sep 2022
Reported by (CNA)atlassian

What to do

  1. Check whether you run it. Look for Bitbucket Server and Data Center in your asset inventory, including appliances and cloud images. Stack check lists every exploited Atlassian 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 25 Aug 2022.
  4. Get told next time. Email alerts when CISA adds a CVE for Atlassian.

References

Questions

Is CVE-2022-36804 being exploited?

Yes. CISA added CVE-2022-36804 to the Known Exploited Vulnerabilities catalog on 30 Sep 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2022-36804 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-2022-36804?

Apply updates per vendor instructions. Check Atlassian's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Bitbucket Server and Data Center 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 September 2022 · Atlassian scorecard · act-now radar.

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