VulnerabilityModified
CVE-2016-6354
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.
CRITICAL 9.8EPSS 8.77%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.77%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 8.77% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- debian/debian linux · westes/flex
- Source
- cve@mitre.org
References
- http://www.debian.org/security/2016/dsa-3653Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/18/8Release Notes, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/26/12Release Notes, Third Party Advisory
- https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466Patch
- https://security.gentoo.org/glsa/201701-31
- http://www.debian.org/security/2016/dsa-3653Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/18/8Release Notes, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/26/12Release Notes, Third Party Advisory
- https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466Patch
- https://security.gentoo.org/glsa/201701-31
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.