CVE-2016-6354

Published: Sep 21, 2016Modified: May 6, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

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.

Affected (2)

Products: Debian: Debian Linux · Westes: Flex

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 8.0

Configuration B

1 vulnerable

Vulnerable Software	Affected Versions
Westes Flex	Up to 2.6.0

Related CWEs

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (10)

http://www.debian.org/security/2016/dsa-3653

Source: cve@mitre.org

Third Party Advisory

http://www.openwall.com/lists/oss-security/2016/07/18/8

Source: cve@mitre.org

Release NotesThird Party Advisory

http://www.openwall.com/lists/oss-security/2016/07/26/12

Source: cve@mitre.org

Release NotesThird Party Advisory

https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466

Source: cve@mitre.org

Patch

https://security.gentoo.org/glsa/201701-31

Source: cve@mitre.org

http://www.debian.org/security/2016/dsa-3653