curl -- authentication buffer overflow vulnerability

Description:

Two iDEFENSE Security Advisories reports:

An exploitable stack-based buffer overflow condition exists when using NT Lan Manager (NTLM) authentication. The problem specifically exists within Curl_input_ntlm() defined in lib/http_ntlm.c.

Successful exploitation allows remote attackers to execute arbitrary code under the privileges of the target user. Exploitation requires that an attacker either coerce or force a target to connect to a malicious server using NTLM authentication.

An exploitable stack-based buffer overflow condition exists when using Kerberos authentication. The problem specifically exists within the functions Curl_krb_kauth() and krb4_auth() defined in lib/krb4.c.

Successful exploitation allows remote attackers to execute arbitrary code under the privileges of the target user. Exploitation requires that an attacker either coerce or force a target to connect to a malicious server using Kerberos authentication.

References:

• BugTraq ID 12615
• BugTraq ID 12616
• CVE name CVE-2005-0490
• List post: <http://marc.theaimsgroup.com/?l=bugtraq&m=110902850731457>(search)
• List post: <http://marc.theaimsgroup.com/?l=bugtraq&m=110902601221592>(search)

Affects:

• curl <7.13.1

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