CVE-2016-6303
Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or
02 Description
Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or
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
- 31.98% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 98.1% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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
- 2016-09-16 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
- 7e544daac64f30b72210b048e52e15963770f5c3d6f615496de4e481964b1f8a
05 Affected products
06 References
- www.tenable.comhttps://www.tenable.com/security/tns-2016-20
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
- kb.pulsesecure.nethttps://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40312
- www-01.ibm.comhttp://www-01.ibm.com/support/docview.wss?uid=swg21995039
- www.securitytracker.com1036885http://www.securitytracker.com/id/1036885
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
- nodejs.orghttps://nodejs.org/en/blog/vulnerability/september-2016-security-releases/
- www.tenable.comhttps://www.tenable.com/security/tns-2016-16
- www.tenable.comhttps://www.tenable.com/security/tns-2016-21
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- www.securityfocus.com92984http://www.securityfocus.com/bid/92984
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1370146
- bto.bluecoat.comhttps://bto.bluecoat.com/security-advisory/sa132
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- security.freebsd.orgFreeBSD-SA-16:26https://security.FreeBSD.org/advisories/FreeBSD-SA-16:26.openssl.asc
- git.openssl.orghttps://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=55d83bf7c10c7b205fffa23fa7c3977491e56c07
- 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
07 Fixed in
Arch Linux
- lib32-openssl Fixed in 1:1.0.2.i-1
- openssl Fixed in 1.0.2.i-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- openssl Fixed in 1.0.2i-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- openssl Fixed in 1.0.2i-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- openssl Fixed in 1.0.2i-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- openssl Fixed in 1.0.1f-1ubuntu2.20
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- openssl Fixed in 1.0.2g-1ubuntu4.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.