Impact: Moderate Public Date: 2019-06-18 CWE: CWE-122 Bugzilla: 1721071: CVE-2012-6711 bash: heap-based buffer overflow during echo of unsupported characters A heap-based buffer overflow was discovered in bash when wide characters, not supported by the current locale set in 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.
Find out more about CVE-2012-6711 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Local |
| Attack Complexity | High |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 8 | bash | Not affected |
| Red Hat Enterprise Linux 7 | bash | Affected |
| Red Hat Enterprise Linux 6 | bash | Not affected |
| Red Hat Enterprise Linux 5 | bash | Not affected |
Vulmon