MEDIUM
OpenSSL: Side channel attack on modular exponentiation
Published Mar 3, 2016
5.1
MEDIUMCVSS 3.1
EPSS 1.91%
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.
Affected products
No data.
Configuration 1
OR
- 1.0.1
- 1.0.1
- 1.0.1
- 1.0.1
- 1.0.1a
- 1.0.1b
- 1.0.1c
- 1.0.1d
- 1.0.1e
- 1.0.1f
- 1.0.1g
- 1.0.1h
- 1.0.1i
- 1.0.1j
- 1.0.1k
- 1.0.1l
- 1.0.1m
- 1.0.1n
- 1.0.1o
- 1.0.1p
- 1.0.1q
- 1.0.1r
- 1.0.2
- 1.0.2
- 1.0.2
- 1.0.2
- 1.0.2a
- 1.0.2b
- 1.0.2c
- 1.0.2d
- 1.0.2e
- 1.0.2f
Configuration 2
Configuration 3
OR
- 7.0
- 8.0
Configuration 4
OR
- 12.04
- 14.04
- 15.10
No data.
RHEV 3.X Hypervisor and Agents for RHEL-6
rhev-hypervisor7-0:7.2-20160302.1.el6ev
Fixed · RHSA-2016:0379
RHEV 3.X Hypervisor and Agents for RHEL-7
rhev-hypervisor7-0:7.2-20160302.1.el7ev
Fixed · RHSA-2016:0379
Red Hat Enterprise Linux 6
openssl-0:1.0.1e-42.el6_7.4
Fixed · RHSA-2016:0301
Red Hat Enterprise Linux 7
openssl-1:1.0.1e-51.el7_2.4
Fixed · RHSA-2016:0301
Red Hat JBoss Core Services
n/a
Fixed · RHSA-2016:2957
Red Hat Enterprise Linux 5
openssl
Will not fix
Red Hat Enterprise Linux 5
openssl097a
Will not fix
Red Hat Enterprise Linux 6
guest-images
Affected
Red Hat Enterprise Linux 6
openssl098e
Affected
Red Hat Enterprise Linux 7
openssl098e
Affected
Red Hat Enterprise Linux 7
rhel-guest-image
Affected
Red Hat JBoss Enterprise Application Platform 6
openssl
Not affected
Red Hat JBoss Enterprise Web Server 2
openssl
Not affected
Red Hat JBoss Enterprise Web Server 3
openssl
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| RHEV 3.X Hypervisor and Agents for RHEL-6 | rhev-hypervisor7-0:7.2-20160302.1.el6ev | Fixed | RHSA-2016:0379 |
| RHEV 3.X Hypervisor and Agents for RHEL-7 | rhev-hypervisor7-0:7.2-20160302.1.el7ev | Fixed | RHSA-2016:0379 |
| Red Hat Enterprise Linux 6 | openssl-0:1.0.1e-42.el6_7.4 | Fixed | RHSA-2016:0301 |
| Red Hat Enterprise Linux 7 | openssl-1:1.0.1e-51.el7_2.4 | Fixed | RHSA-2016:0301 |
| Red Hat JBoss Core Services | n/a | Fixed | RHSA-2016:2957 |
| Red Hat Enterprise Linux 5 | openssl | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | openssl097a | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | guest-images | Affected | n/a |
| Red Hat Enterprise Linux 6 | openssl098e | Affected | n/a |
| Red Hat Enterprise Linux 7 | openssl098e | Affected | n/a |
| Red Hat Enterprise Linux 7 | rhel-guest-image | Affected | n/a |
| Red Hat JBoss Enterprise Application Platform 6 | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 2 | openssl | Not affected | n/a |
| Red Hat JBoss Enterprise Web Server 3 | openssl | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
5.1 MEDIUM NVD
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Local
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact None
No CVSS v3.0 score for this CVE.
1.9 LOW NVD
AV:L/AC:M/Au:N/C:P/I:N/A:N
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.91% 0.01910
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01910
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (33 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.91% (0.01910) | 79.05th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.91% (0.01910) | 77.03th | v5 (v2026.06.15) |
| Feb 4, 2026 | 0.55% (0.00545) | 67.21th | v4 (v2025.03.14) |
| Feb 1, 2026 | 1.62% (0.01621) | 81.52th | v4 (v2025.03.14) |
| Jan 4, 2026 | 0.46% (0.00461) | 63.51th | v4 (v2025.03.14) |
| Jan 1, 2026 | 1.62% (0.01621) | 81.47th | v4 (v2025.03.14) |
| Nov 4, 2025 | 0.46% (0.00461) | 63.31th | v4 (v2025.03.14) |
| Nov 1, 2025 | 1.62% (0.01621) | 81.29th | v4 (v2025.03.14) |
| Oct 4, 2025 | 0.46% (0.00461) | 63.28th | v4 (v2025.03.14) |
| Oct 1, 2025 | 1.62% (0.01621) | 81.24th | v4 (v2025.03.14) |
| Jun 4, 2025 | 0.49% (0.00494) | 64.64th | v4 (v2025.03.14) |
| Jun 1, 2025 | 1.75% (0.01750) | 81.69th | v4 (v2025.03.14) |
| May 4, 2025 | 0.49% (0.00494) | 64.50th | v4 (v2025.03.14) |
| May 1, 2025 | 1.75% (0.01750) | 81.58th | v4 (v2025.03.14) |
| Apr 20, 2025 | 0.58% (0.00585) | 67.79th | v4 (v2025.03.14) |
| Apr 19, 2025 | 1.75% (0.01750) | 81.51th | v4 (v2025.03.14) |
| Apr 11, 2025 | 0.58% (0.00585) | 66.66th | v4 (v2025.03.14) |
| Apr 10, 2025 | 1.75% (0.01750) | 80.99th | v4 (v2025.03.14) |
| Apr 8, 2025 | 0.58% (0.00585) | 66.62th | v4 (v2025.03.14) |
| Apr 7, 2025 | 1.75% (0.01750) | 80.96th | v4 (v2025.03.14) |
| Mar 30, 2025 | 0.35% (0.00353) | 54.72th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.90% (0.03897) | 80.16th | v4 (v2025.03.14) |
| Mar 28, 2025 | 0.35% (0.00353) | 54.73th | v4 (v2025.03.14) |
| Mar 27, 2025 | 3.90% (0.03897) | 86.75th | v4 (v2025.03.14) |
| Mar 20, 2025 | 0.36% (0.00363) | 55.64th | v4 (v2025.03.14) |
| Mar 19, 2025 | 4.00% (0.04000) | 87.05th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.36% (0.00363) | 56.19th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.15% (0.00152) | 52.77th | v3 (v2023.03.01) |
| Nov 10, 2023 | 0.15% (0.00152) | 51.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.10% (0.00099) | 39.46th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.72% (0.04720) | 89.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.72% (0.04720) | 88.14th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.72% (0.04720) | 74.52th | v2 (v2022.01.01) |
Weaknesses (1)
References (48)
- http://cachebleed.info Broken Link
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759 Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178358.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178817.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00005.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00015.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00017.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00018.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00029.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00030.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00036.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00055.html vendor-advisoryMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00019.html vendor-advisoryMailing ListThird Party Advisory
- http://marc.info/?l=bugtraq&m=145889460330120&w=2 vendor-advisoryMailing ListThird Party Advisory
- http://openssl.org/news/secadv/20160301.txt Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2957.html vendor-advisoryThird Party Advisory
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160302-openssl vendor-advisoryThird Party Advisory
- http://www.debian.org/security/2016/dsa-3500 vendor-advisoryThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html PatchThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html Third Party Advisory
- http://www.securitytracker.com/id/1035133 vdb-entryThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2914-1 vendor-advisoryThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-0702 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1310599 Issue Tracking
- 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_us Third Party Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05052990 Third Party Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05376917 Third Party Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722 Third Party Advisory
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40168 Third Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-0702
- https://security.FreeBSD.org/advisories/FreeBSD-SA-16:12.openssl.asc vendor-advisoryThird Party Advisory
- https://security.gentoo.org/glsa/201603-15 vendor-advisoryThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-0702
- https://www.openssl.org/news/secadv/20160301.txt Third Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Mar 3, 2016
Updated Aug 5, 2024
Reserved Dec 16, 2015
Link CVE-2016-0702
CISA Vulnrichment
Updated n/a