CVE-2020-29363

Name: CVE-2020-29363
Creator: NVD / NIST
Published: 2020-12-16T14:15:12.84+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.52%

Last modified Jun 17, 2026

CVE-2020-29363 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 3.52% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

3.52%

87.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
P11-Kit Project	P11-Kit	>= 0.23.6, < 0.23.22
Debian	Debian Linux	10.0
Oracle	Communications Cloud Native Core Policy	1.14.0

References

https://github.com/p11-glue/p11-kit/releasesRelease Notes, Third Party Advisory
https://github.com/p11-glue/p11-kit/security/advisories/GHSA-5j67-fw89-fp6xThird Party Advisory
https://www.debian.org/security/2021/dsa-4822Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://github.com/p11-glue/p11-kit/releasesRelease Notes, Third Party Advisory
https://github.com/p11-glue/p11-kit/security/advisories/GHSA-5j67-fw89-fp6xThird Party Advisory
https://www.debian.org/security/2021/dsa-4822Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory

Timeline

Published: Dec 16, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-29363?

How severe is CVE-2020-29363?

CVE-2020-29363 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.52% probability of exploitation in the next 30 days.

How do I fix CVE-2020-29363?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-29363?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST