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Medium 5.9Published Apr 16, 2018
CVE-2018-0737Cache timing vulnerability in RSA Key Generation
Updated under an hour ago ()
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It affects OpenSSL and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The OpenSSL RSA Key generation algorithm has been shown to be vulnerable to a cache timing side channel attack. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could recover the private key. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2b-1.0.2o).
- CVSS
- 5.9 MEDIUM (v3.0, NVD)CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- openssl
- NVD analysis
- Modified
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
OpenSSL OpenSSL openssl:openssl (from the name) | Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h); Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2b-1.0.2o) | CNA record |
openssl openssl openssl:openssl | from 1.0.2b through 1.0.2o; from 1.1.0 through 1.1.0h | NVD |
canonical ubuntu_linux canonical:ubuntu_linux | 14.04; 16.04; 17.10 | NVD |
References
- https://lists.debian.org/debian-lts-announce/2018/07/msg00043.htmlmailing-list, x-refsource-mlist
- https://www.debian.org/security/2018/dsa-4355vendor-advisory, x-refsource-debian
- https://usn.ubuntu.com/3628-2/vendor-advisory, x-refsource-ubuntu, third-party-advisory
- https://security.gentoo.org/glsa/201811-21vendor-advisory, x-refsource-gentoo
- https://usn.ubuntu.com/3692-2/vendor-advisory, x-refsource-ubuntu
- https://access.redhat.com/errata/RHSA-2018:3505vendor-advisory, x-refsource-redhat
- http://www.securityfocus.com/bid/103766vdb-entry, x-refsource-bid, third-party-advisory
- https://usn.ubuntu.com/3692-1/vendor-advisory, x-refsource-ubuntu
- https://access.redhat.com/errata/RHSA-2018:3221vendor-advisory, x-refsource-redhat
- https://www.debian.org/security/2018/dsa-4348vendor-advisory, x-refsource-debian
- http://www.securitytracker.com/id/1040685vdb-entry, x-refsource-sectrack, third-party-advisory
- https://usn.ubuntu.com/3628-1/vendor-advisory, x-refsource-ubuntu, third-party-advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/vendor-advisory, x-refsource-fedora
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/vendor-advisory, x-refsource-fedora
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/vendor-advisory, x-refsource-fedora
- https://access.redhat.com/errata/RHSA-2019:3933vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2019:3935vendor-advisory, x-refsource-redhat
- https://access.redhat.com/errata/RHSA-2019:3932vendor-advisory, x-refsource-redhat
- https://www.oracle.com/security-alerts/cpuapr2020.htmlx-refsource-misc
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlx-refsource-confirm
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.htmlx-refsource-confirm
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlx-refsource-misc
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.htmlx-refsource-misc
- https://www.tenable.com/security/tns-2018-14x-refsource-confirm
- https://securityadvisories.paloaltonetworks.com/Home/Detail/133x-refsource-confirm
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=349a41da1ad88ad87825414752a8ff5fdd6a6c3f
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=6939eab03a6e23d2bd2c3f5e34fe1d48e542e787
- https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/
- https://security.netapp.com/advisory/ntap-20180726-0003/
- https://www.openssl.org/news/secadv/20180416.txtvendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.