CWE Code: 119
Vulnerability Type: privilege_escalation
CVSS Score: 4.6
CWE Name:  Improper Restriction of Operations within the Bounds of a Memory Buffer
Summary: a heap-based buffer overflow exists in gnu bash before 4.3 when wide characters, not supported by the current locale set in the lc_ctype environment variable, are printed through the echo built-in function. a local attacker, who can provide data to print through the "echo -e" built-in function, may use this flaw to crash a script or execute code with the privileges of the bash process. this occurs because ansicstr() in lib/sh/strtrans.c mishandles u32cconv().
Access Authentication: NONE
Access Complexity: LOW
Access Vector: LOCAL
Impact (C/I/A): PARTIAL/PARTIAL/PARTIAL
Published Date: 2019-06-18
Last Modified Date: 2019-06-20