Medium severity · published Dec 16, 2020
CVE-2020-29362
An issue was discovered in p11-kit 0.21.1 through 0.23.21
5.3
CVSS
2.3%
EPSS
No
On KEV
Description
An issue was discovered in p11-kit 0.21.1 through 0.23.21. A heap-based buffer over-read has been discovered in the RPC protocol used by thep11-kit server/remote commands and the client library. When the remote entity supplies a byte array through a serialized PKCS#11 function call, the receiving entity may allow the reading of up to 4 bytes of memory past the heap allocation.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
P1
P11-kit · P11-kit Project
0.23.6 before 0.23.22 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-29362
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-29362
Release Notes
https://github.com/p11-glue/p11-kit/releases
Third Party Advisory
https://github.com/p11-glue/p11-kit/security/advisories/GHSA-5wpq-43j2-6qwc
Mailing List
https://lists.debian.org/debian-lts-announce/2021/01/msg00002.html
Third Party Advisory
https://www.debian.org/security/2021/dsa-4822
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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