CVE-2017-1000257

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

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libcurl ausnutzen, um beliebigen Programmcode mit den Rechten des Dienstes oder einen Denial of Service Angriff auszuführen.

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 IMAP handler. An IMAP FETCH response line indicates the size of the returned data, in number of bytes. When that response says the data is zero bytes, libcurl would pass on that (non-existing) data with a pointer and the size (zero) to the deliver-data function. libcurl's deliver-data function treats zero as a magic number and invokes strlen() on the data to figure out the length. The strlen() is called on a heap based buffer that might not be null-terminated so libcurl might read beyond the end of it into whatever memory lies after (or crash) and then deliver that to the application as if it was actually downloaded.