#VU12283 Improper input validation in Python - CVE-2018-1060

Vulnerability identifier: #VU12283

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-1060

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Python
Universal components / Libraries / Scripting languages

Vendor: Python.org

Description
The vulnerability allows a remote attacker to cause DoS condition on he target system.

The weakness exists due to the way catastrophic backtracking was implemented in apop() method in pop3lib. A remote attacker can cause the service to crash.

Mitigation
Update to version 3.6.5.

Vulnerable software versions

Python: 3.6 - 3.6.4

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External links
https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-final

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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.