TI-2024-14243 Aliases CVE-2024-21484 GHSA-rh63-9qcf-83gf

Observable discrepancy in jsrsasign

LOW 37CWE-203Published 2024-01-22 · Updated 2024-10-21

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · Low
Fix status: Partial Red Hat: 1 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-203.

Summary

Versions 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0096 61st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial jsrsasign: 11.0.0jsrsasign (npm): 11.0.0Red Hat: 1 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	jsrsasign	before 11.0.0	11.0.0	Patch available	CNA
—	org.webjars.npm:jsrsasign	all versions	—	No fix listed	CNA
—	org.webjars.bowergithub.kjur:jsrsasign	all versions	—	No fix listed	CNA
—	org.webjars.bower:jsrsasign	all versions	—	No fix listed	CNA
—	jsrsasign (npm)	before 11.0.0	11.0.0	Patch available	GHSA-rh63-9qcf-83gf

jsrsasign Vendor— Affected before 11.0.0 Fixed in 11.0.0 Patch available CNA
org.webjars.npm:jsrsasign Vendor— Affected all versions Fixed in — No fix listed CNA
org.webjars.bowergithub.kjur:jsrsasign Vendor— Affected all versions Fixed in — No fix listed CNA
org.webjars.bower:jsrsasign Vendor— Affected all versions Fixed in — No fix listed CNA
jsrsasign (npm) Vendor— Affected before 11.0.0 Fixed in 11.0.0 Patch available GHSA-rh63-9qcf-83gf

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:kjur:jsrsasign::::::node.js::*	before 11.0.0	Vulnerable	Kjur

cpe:2.3:a:kjur:jsrsasign:*:*:*:*:*:node.js:*:* Versions before 11.0.0 Vulnerable ·Kjur

Remediation

Fix · CNA jsrsasign Fixed in 11.0.0
Fix · GHSA-rh63-9qcf-83gf jsrsasign (npm) Fixed in 11.0.0 Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Quay 3	Affected	No fix yet
8Base-MTV-2.5	Fixed	—

Not affected: 1 product

8Base-MTV-2.5

Timeline

2026-10-02 Threatist record created from CVE-2024-21484
2026-10-03 Alias added: GHSA-rh63-9qcf-83gf

References

Other 4

TI-2026-04006 Incorrect numeric conversion in jsrsasign CVSS 4.0HIGH 8.7
TI-2026-04002 Infinite loop in jsrsasign CVSS 4.0HIGH 8.7
TI-2026-04004 Improper signature verification in jsrsasign CVSS 4.0CRITICAL 9.1
TI-2026-04003 Versions of the package jsrsasign from 7.0.0 and before 11.1.1 are vulnerable to… CVSS 4.0CRITICAL 9.3
TI-2020-11771 An issue was discovered in the jsrsasign package before 8.0.17 for Node.js. CVSS 3.1CRITICAL 9.8
TI-2020-11770 An issue was discovered in the jsrsasign package before 8.0.18 for Node.js. CVSS 3.1CRITICAL 9.8

See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences