ClickCease Hackers exploit critical Bitbucket server vulnerability in attacks
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Hackers actively exploit critical Bitbucket server vulnerability in attacks, CISA warns

October 14, 2022
Hackers exploit critical bitbucket

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a Bitbucket Server RCE and two Microsoft Exchange zero-days to its list of exploited vulnerabilities.

The Bitbucket flaw is a critical vulnerability in Atlassian’s Bitbucket Server and Data Center that is tracked as CVE-2022-36804.

There is a publicly available proof of concept exploit code for the vulnerability that could increase hackers targeting the flaw.

Exploiting the vulnerability via malicious HTTP requests allows attackers to gain remote code execution. This vulnerability affects all Bitbucket Server and Data Center versions after 6.10.17, including 7.0.0 and up to 8.3.0. According to security researchers from BinaryEdge and GreyNoise, attackers have started searching for the vulnerability since September 20 to exploit it.

The other two vulnerabilities added to the CISA list of exploited vulnerabilities are the two Microsoft Exchange zero-days (CVE-2022-41040 and CVE-2022-41082) exploited in limited targeted attacks. Although the company has yet to release security updates to fix the exploited bugs, it urges its customers to add an IIS server-blocking rule that would block attack attempts.

CISA asked all Federal Civilian Executive Branch Agencies (FCEB) to apply patches or mitigation measures for the three actively exploited bugs. The federal agencies were given three weeks until October 21 to ensure that exploitation attempts were blocked.

Since appropriate and timely patching will help reduce the scope of potential attacks, the U.S. Cybersecurity Agency urged all private and public organizations worldwide to prioritize patching these vulnerabilities, even though BOD 22-01 applies only to U.S. FCEB agencies.

The sources for this piece include an article in BleepingComputer.

Summary
Hackers actively exploit critical Bitbucket server vulnerability in attacks, CISA warns
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Hackers actively exploit critical Bitbucket server vulnerability in attacks, CISA warns
Description
The Bitbucket flaw is a critical vulnerability in Atlassian's Bitbucket Server and Data Center that is tracked as CVE-2022-36804.
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