Improper input validation in OpenSSL
CVE-2016-6302
The tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL before 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote attackers to cause a denial of service via a ticket that is too short.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.278 (98.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.264 · newest: 0.278 · change: +0.014
Affected products
- OpenSSL — versions 1.0.1, 1.0.1a, 1.0.1b
- Oracle Linux — versions 6, 7
- Oracle Solaris — versions 10, 11.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.tenable.com/security/tns-2016-20
- access.redhat.com/errata/RHSA-2018:2185 (vendor-advisory)
- access.redhat.com/errata/RHSA-2018:2186 (vendor-advisory)
- www.splunk.com/view/SP-CAAAPUE (Third Party Advisory)
- www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- rhn.redhat.com/errata/RHSA-2016-1940.html (vendor-advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html (Patch, Third Party Advisory)
- www.securityfocus.com/bid/92628 (VDB Entry, Third Party Advisory, vdb-entry)
- kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312 (Third Party Advisory)
- git.openssl.org/
Frequently asked questions
- What is CVE-2016-6302?
- CVE-2016-6302 is a high-severity vulnerability in OpenSSL, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-09-16.
- How severe is CVE-2016-6302?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-6302 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.