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 (5)
Core 5
Core References
Release Notes, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/07/18/8
Release Notes, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/07/26/12
Patch x_refsource_confirm
https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466
Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2016/dsa-3653
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201701-31
Scores
CVSS v3
9.8
EPSS
0.0877
EPSS Percentile
94.5%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-119
Status
published
Products (2)
debian/debian_linux
8.0
westes/flex
< 2.6.0
Published
Sep 21, 2016
Tracked Since
Feb 18, 2026