Multiple stack-based buffer overflows in libcURL and cURL 7.12.1, and possibly other versions, allow remote malicious web servers to execute arbitrary code via base64 encoded replies that exceed the intended buffer lengths when decoded, which is not properly handled by (1) the Curl_input_ntlm function in http_ntlm.c during NTLM authentication or (2) the Curl_krb_kauth and krb4_auth functions in krb4.c during Kerberos authentication.
https://exchange.xforce.ibmcloud.com/vulnerabilities/19423
http://www.mandriva.com/security/advisories?name=MDKSA-2005:048
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10273
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-0491
http://www.securityfocus.com/bid/12616
http://www.securityfocus.com/bid/12615
http://www.redhat.com/support/errata/RHSA-2005-340.html
http://www.novell.com/linux/security/advisories/2005_11_curl.html
http://www.idefense.com/application/poi/display?id=203&type=vulnerabilities
http://www.idefense.com/application/poi/display?id=202&type=vulnerabilities
http://marc.info/?l=full-disclosure&m=110959085507755&w=2
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000940