CVE-2018-0737

Cache timing vulnerability in RSA Key Generation

N/A
Published: April 16, 2018 at 05:00 PM UTC
Updated: October 15, 2026 at 06:17 PM UTC
2 products affected across 2 vendorsUbuntu LinuxOpenSSL

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Severity
N/A
Exploit prediction
EPSS 12%
SSVC
No known exploit

Description

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.0.2b ≤ v ≤ 1.0.2o1.1.0 ≤ v ≤ 1.1.0h
Vendor states this is fixed in 1.0.2p-dev (unaffected)
Vendor states this is fixed in 1.1.0i-dev (unaffected)

References (34)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Confidentiality
PARTIAL
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-327

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