CVE-2016-6354 Information

Description

Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.debian.org/security/2016/dsa-3653 http://www.openwall.com/lists/oss-security/2016/07/18/8 http://www.openwall.com/lists/oss-security/2016/07/26/12 https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466 https://security.gentoo.org/glsa/201701-31

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8