THREATPORT/VULNERABILITY/CVE-2020-8432
CRITICAL SEVERITY

CVE-2020-8432

U Boot vulnerability

CVSS
9.8
EPSS
3.6%
EPSS pct
88th
Exploited
No known
In Das U-Boot through 2020.01, a double free has been found in the cmd/gpt.c do_rename_gpt_parts() function. Double freeing may result in a write-what-where condition, allowing an attacker to execute arbitrary code. NOTE: this vulnerablity was introduced when attempting to fix a memory leak identified by static analysis.
Affected vendor
Denx
Affected product
U Boot
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2020-01-29

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.6% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2020-8432

  • Confirm whether Denx U Boot is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-8432.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-8432

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-8432 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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