CyberRota Analysis
AI-GeneratedThe vulnerability affects Oracle products utilizing the IesEngine for decryption, specifically when using a padded block cipher like AES in CBC mode with PKCS#7 padding. A remote attacker can exploit this flaw through a CBC padding-oracle attack, allowing them to recover plaintext from modified ciphertexts, potentially compromising sensitive data. Organizations using affected Oracle applications should prioritize patching to mitigate the risk of data exposure.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
Observable discrepancy in IesEngine.DecryptBlock in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote attacker who has captured an IES or ECIES ciphertext, and who can submit modified ciphertexts for decryption under the same key pair, to recover its plaintext via a CBC padding-oracle attack, because in block-cipher mode the engine decrypts the ciphertext and removes its padding before verifying the MAC. A padding failure is therefore reported with a different error message, and without the MAC computation, compared with a MAC failure. Only applications that construct IesEngine directly with a padded block cipher, such as AES in CBC mode with PKCS#7 padding, are affected; stream-mode IES is not.