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().
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2019-06-18T17:34:08

Updated: 2019-11-11T15:06:56

Reserved: 2019-06-18T00:00:00


Link: CVE-2012-6711

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2019-06-18T18:15:09.247

Modified: 2023-11-07T02:13:33.410


Link: CVE-2012-6711

JSON object: View

cve-icon Redhat Information

No data.

CWE