CVE-2017-8816

Multiple vulnerabilities have been identified in PHOENIX CONTACT AXC F 2152 with firmware versions 1.x

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in cURL ausnutzen, um einen Denial of Service Zustand herbeizuführen, beliebigen Programmcode auszuführen oder um Informationen offenzulegen.

Ein Angreifer kann mehrere Schwachstellen in Dell Data Protection Advisor ausnutzen, um beliebigen Code auszuführen, einen Denial-of-Service-Zustand zu erzeugen, Sicherheitsmaßnahmen zu umgehen und nicht näher spezifizierte Angriffe zu starten.

Successful exploitation of these vulnerabilities could allow an attacker to decrypt passwords, bypass authentication, and deny service to the device. In addition, these vulnerabilities could interact with third-party vulnerabilities to cause other impacts to integrity, confidentiality, and availability.

libcurl contains a buffer overrun flaw in the NTLM authentication code. The internal function `Curl_ntlm_core_mk_ntlmv2_hash` sums up the lengths of the username + password (= SUM) and multiplies the sum by two (= SIZE) to figure out how large storage to allocate from the heap. The SUM value is subsequently used to iterate over the input and generate output into the storage buffer. On systems with a 32-bit `size_t`, the math to calculate SIZE triggers an integer overflow when the combined lengths of the username and password is larger than 2GB (2^31 bytes). This integer overflow usually causes a tiny buffer to actually get allocated instead of the intended huge one, making the use of that buffer end up in a buffer overrun.