{"id":"CVE-2011-0633","state":"PUBLISHED","title":"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-","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.","publishedAt":"2011-05-13T22:00:00.000Z","updatedAt":"2024-09-16T17:53:46.874Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["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"],"weaknesses":[],"ingestedAt":"2026-10-29T19:39:50.679Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2011/0xxx/CVE-2011-0633.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2011-0633","state":"PUBLISHED","datePublished":"2011-05-13T22:00:00.000Z","dateUpdated":"2024-09-16T17:53:46.874Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2011-01-20T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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.  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