What’s Vulnerable › Vulnerabilities
CVE-2024-21484
- Severity: medium (CVSS 5.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.0% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2024-01-22 · updated 2026-06-22
- Weakness: CWE-203
Description
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.
Affected products
- jsrsasign: before 11.0.0 — fixed in 11.0.0
How to fix
Upgrade to a fixed version: jsrsasign 11.0.0. Check the vendor advisory for mitigations.
References
- https://github.com/kjur/jsrsasign/issues/598
- https://github.com/kjur/jsrsasign/releases/tag/11.0.0
- https://people.redhat.com/~hkario/marvin/
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-6070734
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBKJUR-6070733
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-6070732
- https://security.snyk.io/vuln/SNYK-JS-JSRSASIGN-6070731
- https://github.com/kjur/jsrsasign/issues/598
- https://github.com/kjur/jsrsasign/releases/tag/11.0.0
- https://people.redhat.com/~hkario/marvin/
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-6070734
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBKJUR-6070733
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