CVE-2020-29363

HIGH
7.5
CVSS Score
Published: December 16, 2020 at 01:29 PM UTC
Updated: October 14, 2026 at 10:17 AM UTC
3 products affected across 3 vendorsDebian LinuxCommunications Cloud Native Core PolicyP11-kit

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Severity
HIGH7.5
Exploit prediction
EPSS 4%

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.

Affected

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

0.23.6 ≤ v < 0.23.22
Affected range stops below 0.23.22, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

x_refsource_MISCRelease NotesThird Party Advisory
https://github.com/p11-glue/p11-kit/releases
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
https://www.debian.org/security/2021/dsa-4822
x_refsource_MISCPatchThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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