Input validation error in py-django (Alpine package)

1) Input validation error

EUVDB-ID: #VU23667

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19844

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to hijack another user account.

The vulnerability exists due to insufficient validation of user-supplied input when processing email addresses passed via the password reset form. A remote attacker with knowledge of a valid email address can use a specially crafted email that after Unicode transformation will be treated as the victim's email address and reset password for the victim's account to the attacker provided email address.

Mitigation

Install update from vendor's website.

Vulnerable software versions

py-django (Alpine package): 1.7-r0 - 1.11.23-r2

py-django (Alpine package):

External links

http://git.alpinelinux.org/aports/commit/?id=bf781eafc1b4129d2ec86c3aec0762934678d52f
http://git.alpinelinux.org/aports/commit/?id=6325592173cbeb85e408e522b379427c261a5e81
http://git.alpinelinux.org/aports/commit/?id=ba5bb4ce8d9a7670ec346bcbae065887dc50f5d3
http://git.alpinelinux.org/aports/commit/?id=731de66686d43f91b9dcf733ba91acc55958879d
http://git.alpinelinux.org/aports/commit/?id=0a61f467253f16ad94147ac4b2a312d3757f376f

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.