4.7

CVE-2018-12436: wolfssl

CVSS: 4.7v3.0MediumModified
AliasesUBUNTU-CVE-2018-12436DEBIAN-CVE-2018-12436
Published 15-06-2018Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2018-12436 is a medium (CVSS 4.7) vulnerability in wolfssl. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.2% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.7/10
010
Medium · v3.0 (NVD)
EPSS score
0.39%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-06-2018
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

wolfcrypt/src/ecc.c in wolfSSL before 3.15.1.patch allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

+0.01 pp

From 0.37% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.39%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • wolfssl< 3.15.3+dfsg-1
Ubuntu1 product
  • wolfsslAll versions (No fix recorded)
Wolfssl1 product

3 vendors · 3 products

References

6 links