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.
References (7)
Scores
CVSS v3
7.5
EPSS
0.0024
EPSS Percentile
47.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-203
Status
published
Products (2)
jsrsasign_project/jsrsasign
< 11.0.0
npm/jsrsasign
0 - 11.0.0npm
Published
Jan 22, 2024
Tracked Since
Feb 18, 2026