Vulnerability in Jsrsasign Project

CVE-2024-21484

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.

EPSS: 0.010 (57.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L.

Affected products

  • Jsrsasign_project Jsrsasign
  • Kjur Jsrsasign
  • N/a Jsrsasign — versions 0
  • N/a Org.webjars.bowergithub.kjur:jsrsasign — versions 0
  • N/a Org.webjars.bower:jsrsasign — versions 0
  • N/a Org.webjars.npm:jsrsasign — versions 0

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-21484?
CVE-2024-21484 is a high-severity vulnerability in Jsrsasign Project, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2024-01-22.
How severe is CVE-2024-21484?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2024-21484 known to be exploited?
6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.