CVE-2011-0633

Description

The Net::HTTPS module in libwww-perl (LWP) before 6.00, as used in WWW::Mechanize, LWP::UserAgent, and other products, when running in environments that do not set the If-SSL-Cert-Subject header, does not enable full validation of SSL certificates by default, which allows remote attackers to spoof servers via man-in-the-middle (MITM) attacks involving hostnames that are not properly validated. NOTE: it could be argued that this is a design limitation of the Net::HTTPS API, and separate implementations should be independently assigned CVE identifiers for not working around this limitation. However, because this API was modified within LWP, a single CVE identifier has been assigned.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.14%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://vttynotes.blogspot.com/2010/12/man-in-middle-fun-with-perl-lwp.html
http://cpansearch.perl.org/src/GAAS/libwww-perl-6.02/Changes
http://vttynotes.blogspot.com/2011/03/quick-note-on-lwp-and-perl-security-cve.html

Frequently Asked Questions

What is the severity of CVE-2011-0633?
CVE-2011-0633 has been scored as a medium severity vulnerability.
How to fix CVE-2011-0633?
To fix CVE-2011-0633, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-0633 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2011-0633 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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