What is CVE-2016-6305?

CVE-2016-6305 is a high-severity vulnerability in Openssl, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-09-26.

How severe is CVE-2016-6305?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2016-6305 known to be exploited?

7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Openssl

CVE-2016-6305

The ssl3_read_bytes function in record/rec_layer_s3.c in OpenSSL 1.1.0 before 1.1.0a allows remote attackers to cause a denial of service (infinite loop) by triggering a zero-length record in an SSL_peek call.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.160 (96.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Openssl — versions 1.1.0
N/a — versions n/a

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2016-6305?: CVE-2016-6305 is a high-severity vulnerability in Openssl, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-09-26.
How severe is CVE-2016-6305?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2016-6305 known to be exploited?: 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.