01 Record
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
UnratedPUBLISHEDCNA: redhat
CNA base scoreUnratedNo CNA CVSS vector
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 15.99% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 96.7% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-09-26 00:00Z10 YR AGO
- Last updated
- 2024-08-06 01:29Z2 YR AGO
- Reserved
- 2016-07-26
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 7423bcef33e9061af2a7090e1ec361cafd8212fe23c349fa6aa85185142f934e
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.openssl.orghttps://www.openssl.org/news/secadv/20160922.txt
- www.tenable.comhttps://www.tenable.com/security/tns-2016-20
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- www.securitytracker.com1036879http://www.securitytracker.com/id/1036879
- security.gentoo.orgGLSA-201612-16https://security.gentoo.org/glsa/201612-16
- git.openssl.orghttps://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=63658103d4441924f8dbfc517b99bb54758a98b9
- www-01.ibm.comhttp://www-01.ibm.com/support/docview.wss?uid=swg21995039
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- www.tenable.comhttps://www.tenable.com/security/tns-2016-16
- www.tenable.comhttps://www.tenable.com/security/tns-2016-21
- www.securityfocus.com93149http://www.securityfocus.com/bid/93149
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- github.comhttps://github.com/openssl/openssl/issues/1563
- bto.bluecoat.comhttps://bto.bluecoat.com/security-advisory/sa132
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- kb.juniper.nethttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf