GHSA-mcg6-h362-cmq5

Опубликовано: 11 мар. 2022

Источник: github

Github: Прошло ревью

CVSS4: 6.7

CVSS3: 8.2

Описание

Improper Authorization in cobbler

Impact

If PAM is correctly configured and a user account is set to expired, the expired user-account is still able to successfully log into Cobbler in all places (Web UI, CLI & XMLRPC-API).

The same applies to user accounts with passwords set to be expired.

Patches

There is a patch for the latest Cobbler 3.3.2 available, however a backport will be done for 3.2.x.

Workarounds

Delete expired accounts which are able to access Cobbler via PAM.
Use chage -l <username> to lock the account. If the account has SSH-Keys attached then remove them completely.

References

Originally discovered by @ysf at https://www.huntr.dev/bounties/c458b868-63df-414e-af10-47e3745caa1d/

How to test if my Cobbler instance is affected?

The following pytest test assumes that your PAM setup is correct. In case the added user is not able to login, this test does not make sense to be executed.

def test_pam_login_with_expired_user(): # Arrange # create pam testuser test_username = "expired_user" test_password = "password" test_api = CobblerAPI() subprocess_1 = subprocess.run( ["perl", "-e", "'print crypt(\"%s\", \"%s\")'" % (test_username, test_password)], stdout=subprocess.PIPE ) subprocess.run(["useradd", "-p", subprocess_1.stdout, test_username]) # change user to be expired subprocess.run(["chage", "-E0", test_username]) # Act result = pam.authenticate(test_api, test_username, test_password) # Assert - login should fail assert not result

For more information

If you have any questions or comments about this advisory:

Open an issue in the Cobbler repository
Ask in the Gitter/Matrix Chat
Email us at cobbler.project@gmail.com

Ссылки

Пакеты

Наименование

cobbler

pip

Затронутые версииВерсия исправления

< 3.3.2

3.3.2

EPSS

Процентиль: 73%

0.00745

Низкий

6.7 Medium

CVSS4

8.2 High

CVSS3

CVE ID

CVE-2022-0860

Дефекты

CWE-285

CWE-863

Связанные уязвимости

CVE-2022-0860

CVSS3: 9.1

ubuntu

почти 4 года назад

Improper Authorization in GitHub repository cobbler/cobbler prior to 3.3.2.

CVE-2022-0860

CVSS3: 9.1

nvd

почти 4 года назад

Improper Authorization in GitHub repository cobbler/cobbler prior to 3.3.2.

CVE-2022-0860

CVSS3: 9.1

debian

почти 4 года назад

Improper Authorization in GitHub repository cobbler/cobbler prior to 3 ...

EPSS

Процентиль: 73%

0.00745

Низкий

6.7 Medium

CVSS4

8.2 High

CVSS3

CVE ID

CVE-2022-0860

Дефекты

CWE-285

CWE-863