CVE-2018-16743

An issue was discovered in mgetty before 1.2.1. In contrib/next-login/login.c, the command-line parameter username is passed unsanitized to strcpy(), which can cause a stack-based buffer overflow.

Updated mgetty packages fix security vulnerabilities:

The function do_activate() did not properly sanitize shell metacharacters to prevent command injection (CVE-2018-16741).

Stack-based buffer overflow that could have been triggered via a command-line parameter (CVE-2018-16742).

The command-line parameter username wsa passed unsanitized to strcpy(), which could have caused a stack-based buffer overflow (CVE-2018-16743).

The mail_to parameter was not sanitized, leading to command injection if untrusted input reached reach it (CVE-2018-16744).

The mail_to parameter was not sanitized, leading to a buffer overflow if long untrusted input reached it (CVE-2018-16745).

These are all security issues fixed in the g3utils-1.2.1-6.2 package on the GA media of openSUSE Tumbleweed.

This update for mgetty fixes the following issues:

• CVE-2018-16741: The function do_activate() did not properly sanitize shell metacharacters to prevent command injection (bsc#1108752)
• CVE-2018-16745: The mail_to parameter was not sanitized, leading to a buffer overflow if long untrusted input reached it (bsc#1108756)
• CVE-2018-16744: The mail_to parameter was not sanitized, leading to command injection if untrusted input reached reach it (bsc#1108757)
• CVE-2018-16742: Prevent stack-based buffer overflow that could have been triggered via a command-line parameter (bsc#1108762)
• CVE-2018-16743: The command-line parameter username wsa passed unsanitized to strcpy(), which could have caused a stack-based buffer overflow (bsc#1108761)

This update for mgetty fixes the following issues:

• CVE-2018-16741: The function do_activate() did not properly sanitize shell metacharacters to prevent command injection (bsc#1108752).
• CVE-2018-16745: The mail_to parameter was not sanitized, leading to a buffer overflow if long untrusted input reached it (bsc#1108756).
• CVE-2018-16744: The mail_to parameter was not sanitized, leading to command injection if untrusted input reached reach it (bsc#1108757).
• CVE-2018-16742: Prevent stack-based buffer overflow that could have been triggered via a command-line parameter (bsc#1108762).
• CVE-2018-16743: The command-line parameter username wsa passed unsanitized to strcpy(), which could have caused a stack-based buffer overflow (bsc#1108761).

This update for mgetty fixes the following security issues:

• CVE-2018-16741: The function do_activate() did not properly sanitize shell metacharacters to prevent command injection (bsc#1108752)
• CVE-2018-16745: The mail_to parameter was not sanitized, leading to a buffer overflow if long untrusted input reached it (bsc#1108756)
• CVE-2018-16744: The mail_to parameter was not sanitized, leading to command injection if untrusted input reached reach it (bsc#1108757)
• CVE-2018-16742: Prevent stack-based buffer overflow that could have been triggered via a command-line parameter (bsc#1108762)
• CVE-2018-16743: The command-line parameter username wsa passed unsanitized to strcpy(), which could have caused a stack-based buffer overflow (bsc#1108761)