Vulnerability in OpenSSL

CVE-2018-0737

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).

Vulnerability class: POODLE (CVE-2014-3566)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.116 (95.9th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-0737: held from 0.118 to 0.116.

EPSS over last 30 days · oldest: 0.118 · newest: 0.116 · change: -0.002

Affected products

  • OpenSSL — versions Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2b-1.0.2o), Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h)
  • Canonical Ubuntu Linux — versions 14.04, 16.04, 17.10

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-0737?
CVE-2018-0737 is a medium-severity vulnerability in OpenSSL, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 5.9/10. Published 2018-04-16.
How severe is CVE-2018-0737?
Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2018-0737 known to be exploited?
9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.