The ABB IDAL HTTP server mishandles format strings in a username or cookie during the authentication process. Attempting to authenticate with the username %25s%25p%25x%25n will crash the server. Sending %08x.AAAA.%08x.%08x will log memory content from the stack.

The ABB IDAL HTTP server mishandles format strings in a username or cookie during the authentication process. Attempting to authenticate with the username %25s%25p%25x%25n will crash the server. Sending %08x.AAAA.%08x.%08x will log memory content from the stack.

The ABB CP635 HMI component implements hidden administrative accounts used during the provisioning phase of the HMI interface. These credentials allow the provisioning tool Panel Builder 600 to flash a new interface and Tags (MODBUS coils) mapping to the HMI. These credentials are used over both HTTP(S) and FTP. There is no option to disable or change these undocumented credentials.CVE-2019-7225 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The IDAL HTTP server CGI interface contains a URL, which allows an unauthenticated attacker to bypass authentication and gain access to privileged functions.CVE-2019-7226 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H). The IDAL FTP server fails to ensure directory change requests do not change to locations outside of the root FTP directory. An authenticated attacker can simply traverse outside the server root directory by changing the directory.CVE-2019-7227 has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N). The IDAL HTTP server is vulnerable to memory corruption through insecure use of user supplied format strings. An attacker can abuse this functionality to bypass authentication or execute code on the server.CVE-2019-7228…