CVE-2016-6354
CRITICAL severity · CVSS 9.8 · Memory corruption
9.8CVSS CRITICAL
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)9%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466 ↗
Additional information
- NVD record
- https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466Patch
- http://www.debian.org/security/2016/dsa-3653Advisory
- http://www.openwall.com/lists/oss-security/2016/07/18/8Advisory
- http://www.openwall.com/lists/oss-security/2016/07/26/12Advisory
- https://security.gentoo.org/glsa/201701-31