Vulnerability Monitor

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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.

Published

2016-09-21T14:25:20.800

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	debian	debian_linux	8.0	Yes
Application	westes	flex	≤ 2.6.0	Yes

References

http://www.debian.org/security/2016/dsa-3653 Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2016/07/18/8 Release Notes, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2016/07/26/12 Release Notes, Third Party Advisory ([email protected])
https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466 Patch ([email protected])
https://security.gentoo.org/glsa/201701-31 ([email protected])
http://www.debian.org/security/2016/dsa-3653 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/07/18/8 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2016/07/26/12 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466 Patch (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201701-31 (af854a3a-2127-422b-91ae-364da2661108)