Python SSL not handle certificates hostnames with NULL bytes

2013.08.13

Credit: Murray McAllister

Risk: Medium

Local: No

Remote: Yes

CVE: CVE-2013-4238

CWE: CWE-20

CVSS Base Score: 4.3/10

Impact Subscore: 2.9/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: None

Integrity impact: Partial

Availability impact: None

Good morning,

An issue similar to CVE-2013-4073[1] was found in Python:

https://bugs.mageia.org/show_bug.cgi?id=10989
http://bugs.python.org/issue18709

Could a CVE for the Python instance of this flaw please be assigned (if one has not already been assigned)?

Thanks.

[1] <http://www.ruby-lang.org/en/news/2013/06/27/hostname-check-bypassing-vulnerability-in-openssl-client-cve-2013-4073/>

<https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-4073>

--
Murray McAllister / Red Hat Security Response Team

References:

http://www.ruby-lang.org/en/news/2013/06/27/hostname-check-bypassing-vulnerability-in-openssl-client-cve-2013-4073/

https://bugs.mageia.org/show_bug.cgi?id=10989

http://bugs.python.org/issue18709

See this note in RAW Version

Vote for this issue:

50%

Thanks for you vote!

Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.

Nick (*)

Email (*)

Video

Text (*)

(*) - required fields.

{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1

{{ x.comment }}

Python SSL not handle certificates hostnames with NULL bytes

References:

Thanks for you vote!

Thanks for you comment!Your message is in quarantine 48 hours.

Thanks for you comment!
Your message is in quarantine 48 hours.