CVE-2016-6354

HIGH

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.

References

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

Details

Source: MITRE

Published: 2016-09-21

Updated: 2017-01-18

Type: CWE-119

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL