CVE-2024-21484

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Summary

CVECVE-2024-21484
StatePUBLISHED
Assignersnyk
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-01-22 05:15:08 UTC
Updated2026-06-22 03:18:31 UTC
DescriptionVersions of the package jsrsasign before 11.0.0 are vulnerable to Observable Discrepancy via the RSA PKCS1.5 or RSAOAEP decryption process. An attacker can decrypt ciphertexts by exploiting the Marvin security flaw. Exploiting this vulnerability requires the attacker to have access to a large number of ciphertexts encrypted with the same key. Workaround The vulnerability can be mitigated by finding and replacing RSA and RSAOAEP decryption with another crypto library.

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

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

EPSS: 0.009600000 probability, percentile 0.569100000 (date 2026-06-24)

Problem Types: CWE-203 | CWE-203 Observable Discrepancy

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L/E:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Kjur Jsrsasign All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Jsrsasign affected 11.0.0 semver Not specified
CNA Na Org.webjars.npmjsrsasign affected * semver Not specified
CNA Na Org.webjars.bowergithub.kjurjsrsasign affected * semver Not specified
CNA Na Org.webjars.bowerjsrsasign affected * semver Not specified

References

ReferenceSourceLinkTags
Observable Discrepancy in org.webjars.bower:jsrsasign | CVE-2024-21484 | Snyk af854a3a-2127-422b-91ae-364da2661108 security.snyk.io Patch, Third Party Advisory
people.redhat.com/~hkario/marvin af854a3a-2127-422b-91ae-364da2661108 people.redhat.com
Observable Discrepancy in org.webjars.npm:jsrsasign | CVE-2024-21484 | Snyk af854a3a-2127-422b-91ae-364da2661108 security.snyk.io Patch, Third Party Advisory
Observable Discrepancy in jsrsasign | CVE-2024-21484 | Snyk af854a3a-2127-422b-91ae-364da2661108 security.snyk.io Patch, Third Party Advisory
jsrsasign vulnerable to the Marvin Attack · Issue #598 · kjur/jsrsasign · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Exploit, Issue Tracking, Vendor Advisory
Observable Discrepancy in org.webjars.bowergithub.kjur:jsrsasign | CVE-2024-21484 | Snyk af854a3a-2127-422b-91ae-364da2661108 security.snyk.io Patch, Third Party Advisory
Release remove RSA and RSAOAEP encryption for Marvin attack · kjur/jsrsasign · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Release Notes
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Hubert Kario (en)

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