#VU66555 Deserialization of Untrusted Data in Bitbucket Data Center and Confluence Data Center


Published: 2022-08-17 | Updated: 2023-01-27

Vulnerability identifier: #VU66555

Vulnerability risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-26133

CWE-ID: CWE-502

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Bitbucket Data Center
Server applications / Other server solutions
Confluence Data Center
Server applications / Other server solutions

Vendor: Atlassian

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data within the SharedSecretClusterAuthenticator. A remote non-authenticated attacker can send specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Bitbucket Data Center: 7.20.0 - 7.20.1, 7.19.0 - 7.19.3, 7.18.0 - 7.18.3, 7.17.0 - 7.17.5, 7.6.0 - 7.6.13

Confluence Data Center: 7.18.0, 7.17.0 - 7.17.3, 7.16.0 - 7.16.3, 7.15.0 - 7.15.1, 7.14.0 - 7.14.2, 7.13.0 - 7.13.6, 7.4.0 - 7.4.16


External links
http://jira.atlassian.com/browse/BSERV-13173
http://confluence.atlassian.com/security/multiple-products-security-advisory-hazelcast-vulnerable-to-remote-code-execution-cve-2016-10750-1116292387.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.


Latest bulletins with this vulnerability