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.
How to fix CVE-2011-0633
To remediate CVE-2011-0633, upgrade the affected package to a fixed version below.
- —upgrade to 6.01-1 or later
Is CVE-2011-0633 being exploited?
Low — EPSS is 4.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 6.01-1