THREATPORT/VULNERABILITY/CVE-2020-29363
HIGH SEVERITY

CVE-2020-29363

P11 Kit vulnerability

CVSS
7.5
EPSS
3.5%
EPSS pct
88th
Exploited
No known
An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.
Affected vendor
P11 Kit Project
Affected product
P11 Kit
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
Published
2020-12-16

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 availability.

Its EPSS score of 3.5% 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-2020-29363

  • Confirm whether P11 Kit Project P11 Kit is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-29363.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-29363

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-29363 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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