Medium severity · published Mar 3, 2016
CVE-2016-0702
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…
5.1
CVSS
1.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.9% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
7.0; 8.0 · source: NVD
NO
Node.js · Nodejs
4.0.0 through 4.1.2; 4.2.0 before 4.3.2; 5.0.0 before 5.7.1 · source: NVD
OP
Openssl · Openssl
1.0.1; 1.0.1; 1.0.1; 1.0.1; 1.0.1a; 1.0.1b; +26 more · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04; 15.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-0702
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-0702
Broken Link
http://cachebleed.info
Third Party Advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
Mailing List
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178358.html
Mailing List
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178817.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html
More from Ubuntu Linux
9.8
CVE-2020-11651
SaltStack Salt Authentication Bypass Vulnerability
9.8
CVE-2020-7247
OpenSMTPD Remote Code Execution Vulnerability
9.8
CVE-2019-11043
Underflow in PHP-FPM can lead to RCE
9.8
CVE-2019-16928
Exim Out-of-bounds Write Vulnerability
9.8
CVE-2019-10149
Exim Mail Transfer Agent (MTA) Improper Input Validation