CVE-2016-6354

9.8 CRITICAL

Published: September 21, 2016 Modified: May 06, 2026

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

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 Notes Third Party Advisory

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

Source: cve@mitre.org

Release Notes Third 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