Vulnerability Details : 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.
Vulnerability category: OverflowExecute codeDenial of service
Exploit prediction scoring system (EPSS) score for CVE-2016-6354
Probability of exploitation activity in the next 30 days: 0.71%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 78 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2016-6354
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2016-6354
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The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-6354
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http://www.openwall.com/lists/oss-security/2016/07/26/12
oss-security - Re: CVE request: flex: Buffer overflow in generated code (yy_get_next_buffer)Release Notes;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2016/07/18/8
oss-security - CVE request: flex: Buffer overflow in generated code (yy_get_next_buffer)Release Notes;Third Party Advisory
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https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466
Fixed incorrect integer type · westes/flex@a5cbe92 · GitHubPatch
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http://www.debian.org/security/2016/dsa-3653
Debian -- Security Information -- DSA-3653-1 flexThird Party Advisory
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https://security.gentoo.org/glsa/201701-31
flex: Potential insecure code generation (GLSA 201701-31) — Gentoo security
Products affected by CVE-2016-6354
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:a:westes:flex:*:*:*:*:*:*:*:*