CVE-2016-6354

high-risk
Published 2016-09-21

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.

Do I need to act?

!
43.3% chance of exploitation in next 30 days
EPSS score — higher than 57% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Westes Debian

References (10)

Third Party Advisory http://www.debian.org/security/2016/dsa-3653
Release Notes http://www.openwall.com/lists/oss-security/2016/07/18/8
Release Notes http://www.openwall.com/lists/oss-security/2016/07/26/12
Patch https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466
https://security.gentoo.org/glsa/201701-31
Third Party Advisory http://www.debian.org/security/2016/dsa-3653
Release Notes http://www.openwall.com/lists/oss-security/2016/07/18/8
Release Notes http://www.openwall.com/lists/oss-security/2016/07/26/12
Patch https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466
https://security.gentoo.org/glsa/201701-31
56
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 17/34 · Moderate
Exposure 7/34 · Low