Denial of service in Django

1) Resource exhaustion

EUVDB-ID: #VU17717

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6975

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper memory operations that exist when the django.utils.numberformat.format() function receives a decimal with a large number of digits or a large component. A remote attacker can send a request that submits malicious input, consume excessive amounts of memory resources, resulting in a DoS condition.

Mitigation

The vulnerability has been addressed in the versions 2.1.6, 2.0.11, 1.11.19.

Vulnerable software versions

Django: 1.11 - 2.1.5

External links

http://docs.djangoproject.com/en/dev/releases/security/
http://groups.google.com/forum/#!topic/django-announce/WTwEAprR0IQ
http://www.djangoproject.com/weblog/2019/feb/11/security-releases/
http://www.openwall.com/lists/oss-security/2019/02/11/1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.