Zimbra Collaboration Suite Email Server Unauthenticated RCE

calendar Aug 12, 2024 · attack.initial-access attack.t1190 cve.2022-27925 detection.emerging-threats  ·
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Detects an attempt to leverage the vulnerable servlet "mboximport" for an unauthenticated remote command injection

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 1title: Zimbra Collaboration Suite Email Server Unauthenticated RCE
 2id: dd218fb6-4d02-42dc-85f0-a0a376072efd
 3status: test
 4description: Detects an attempt to leverage the vulnerable servlet "mboximport" for an unauthenticated remote command injection
 5references:
 6    - https://www.volexity.com/blog/2022/08/10/mass-exploitation-of-unauthenticated-zimbra-rce-cve-2022-27925/
 7    - https://www.yang99.top/index.php/archives/82/
 8    - https://github.com/vnhacker1337/CVE-2022-27925-PoC
 9author: '@gott_cyber'
10date: 2022-08-17
11modified: 2023-01-02
12tags:
13    - attack.initial-access
14    - attack.t1190
15    - cve.2022-27925
16    - detection.emerging-threats
17logsource:
18    category: webserver
19detection:
20    selection_servlet:
21        cs-method: 'POST'
22        cs-uri-query|contains: '/service/extension/backup/mboximport\?'
23        cs-uri-query|contains|all:
24            - 'account-name'
25            - 'ow'
26            - 'no-switch'
27            - 'append'
28        sc-status:
29            - 401
30            - 200
31    selection_shell:
32        cs-uri-query|contains: '/zimbraAdmin/'
33        cs-uri-query|endswith: '.jsp'
34        sc-status|contains: '200'
35    condition: 1 of selection_*
36falsepositives:
37    - Unknown
38level: medium

References

  • Mass Exploitation of (Un)authenticated Zimbra RCE: CVE-2022-27925

    [Note: Volexity has reported all findings in this post to Zimbra. Where an existing contact was known, Volexity has notified local CERTs of compromised Zimbra instances in their constituency. The newest versions of Zimbra are patched for both the RCE vulnerability and authentication bypass vulnerabilities described in this blog.] In July and early August 2022, Volexity worked on multiple incidents where the victim organization experienced serious breaches to their Zimbra Collaboration Suite (ZCS) email servers. Volexity’s investigations uncovered evidence indicating the likely cause of these breaches was exploitation of CVE-2022-27925, a remote-code-execution (RCE) vulnerability in ZCS. This initial CVE was patched by Zimbra in March 2022 in 8.8.15P31 and 9.0.0P24. Figure 1. Description of CVE-2022-27925 from the NIST website Initial research into the vulnerability did not uncover any public exploit code, but since a patch had been available for several months, it was reasonable that exploit code could have been […]


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  • https://www.yang99.top/index.php/archives/82/


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  • GitHub - vnhacker1337/CVE-2022-27925-PoC: Zimbra RCE simple poc

    Zimbra RCE simple poc. Contribute to vnhacker1337/CVE-2022-27925-PoC development by creating an account on GitHub.


    Read More

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