CVE-2017-6949 Information

Description

An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size the impact may have been a segfault or buffer overflow.

CVSS Vector

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

Reference

http://lists.gnu.org/archive/html/chicken-announce/2017-03/msg00000.html http://www.securityfocus.com/bid/97317

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1