Public vulnerability disclosure

CVE-2023-5992

Opensc: side-channel leaks while stripping encryption pkcs#1 padding

publishedCWE-203

A vulnerability was found in OpenSC where PKCS#1 encryption padding removal is not implemented as side-channel resistant. This issue may result in the potential leak of private data.

Technical severity5.6 mediumCVSS 3.1 · CNA: redhat
Published2024-01-31Source updated 2026-11-05
Collected2026-11-052 attributed sources

Fixes and workarounds

No remediation reported in collected sources.

Missing remediation information is not evidence that no patch exists.

Affected products and versions

Affected products, source version ranges and reporting authorities
ProductVersionsAuthority
Red Hat Enterprise Linux 8
Red Hat
opensc
https://access.redhat.com/downloads/content/package-browser/
≥ 0:0.20.0-8.el8_9; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Enterprise Linux 9
Red Hat
opensc
https://access.redhat.com/downloads/content/package-browser/
≥ 0:0.23.0-4.el9_3; < * (unaffected, rpm)
Other versions: affected
CNA: redhat
Red Hat Enterprise Linux 7
Red Hat
opensc
https://access.redhat.com/downloads/content/package-browser/
Range not reported
Other versions: affected
CNA: redhat

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / scoreVectorAuthority
3.1 / 5.6
medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LCNA: redhat

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

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