CVE-2016-0702

Name: CVE-2016-0702
Creator: NVD / NIST
Published: 2016-03-03T20:59:00.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.1/10EPSS 1.91%

Last modified Jun 17, 2026

CVE-2016-0702 is a medium-severity vulnerability rated 5.1/10 on the CVSS scale. The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a crafted application on the same Intel Sandy Bridge CPU core as a victim and leveraging cache-bank conflicts, aka a "CacheBleed" attack.. EPSS estimates a 1.91% chance of exploitation in the next 30 days.

Description

The MOD_EXP_CTIME_COPY_FROM_PREBUF function in crypto/bn/bn_exp.c in OpenSSL 1.0.1 before 1.0.1s and 1.0.2 before 1.0.2g does not properly consider cache-bank access times during modular exponentiation, which makes it easier for local users to discover RSA keys by running a crafted application on the same Intel Sandy Bridge CPU core as a victim and leveraging cache-bank conflicts, aka a "CacheBleed" attack.

Metrics

CVSS 3.1

5.1/10

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.91%

77.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Openssl	Openssl	1.0.1
Openssl	Openssl	1.0.1a
Openssl	Openssl	1.0.1b
Openssl	Openssl	1.0.1c
Openssl	Openssl	1.0.1d
Openssl	Openssl	1.0.1e
Openssl	Openssl	1.0.1f
Openssl	Openssl	1.0.1g
Openssl	Openssl	1.0.1h
Openssl	Openssl	1.0.1i
Openssl	Openssl	1.0.1j
Openssl	Openssl	1.0.1k
Openssl	Openssl	1.0.1l
Openssl	Openssl	1.0.1m
Openssl	Openssl	1.0.1n
Openssl	Openssl	1.0.1o
Openssl	Openssl	1.0.1p
Openssl	Openssl	1.0.1q
Openssl	Openssl	1.0.1r
Openssl	Openssl	1.0.2
Openssl	Openssl	1.0.2a
Openssl	Openssl	1.0.2b
Openssl	Openssl	1.0.2c
Openssl	Openssl	1.0.2d
Openssl	Openssl	1.0.2e
Openssl	Openssl	1.0.2f
Nodejs	Node.Js	>= 4.0.0, <= 4.1.2
Nodejs	Node.Js	>= 4.2.0, < 4.3.2
Nodejs	Node.Js	>= 5.0.0, < 5.7.1
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	15.10

References

http://cachebleed.infoBroken Link
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178358.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178817.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00015.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00017.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00018.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00029.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00030.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00036.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00055.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00019.htmlMailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=145889460330120&w=2Mailing List, Third Party Advisory
http://openssl.org/news/secadv/20160301.txtVendor Advisory
http://rhn.redhat.com/errata/RHSA-2016-2957.htmlThird Party Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-opensslThird Party Advisory
http://www.debian.org/security/2016/dsa-3500Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.htmlPatch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
http://www.securitytracker.com/id/1035133Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2914-1Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=708dc2f1291e104fe4eef810bb8ffc1fae5b19c1
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_usThird Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05052990Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05376917Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722Third Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.ascThird Party Advisory
https://security.gentoo.org/glsa/201603-15Third Party Advisory
https://www.openssl.org/news/secadv/20160301.txtThird Party Advisory
http://cachebleed.infoBroken Link
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178358.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178817.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00015.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00017.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00018.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00029.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00030.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00036.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00055.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00019.htmlMailing List, Third Party Advisory
http://marc.info/?l=bugtraq&m=145889460330120&w=2Mailing List, Third Party Advisory
http://openssl.org/news/secadv/20160301.txtVendor Advisory
http://rhn.redhat.com/errata/RHSA-2016-2957.htmlThird Party Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-opensslThird Party Advisory
http://www.debian.org/security/2016/dsa-3500Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.htmlPatch, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
http://www.securitytracker.com/id/1035133Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2914-1Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=708dc2f1291e104fe4eef810bb8ffc1fae5b19c1
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03741en_usThird Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05052990Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05376917Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722Third Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.ascThird Party Advisory
https://security.gentoo.org/glsa/201603-15Third Party Advisory
https://www.openssl.org/news/secadv/20160301.txtThird Party Advisory

Timeline

Published: Mar 3, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-0702?

How severe is CVE-2016-0702?

CVE-2016-0702 has a CVSS score of 5.1/10 (MEDIUM severity). The EPSS model estimates a 1.91% probability of exploitation in the next 30 days.

How do I fix CVE-2016-0702?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-0702?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST