CVSS 7.5 · High EPSS 1,0%
Kerentanan Improper Check for Unusual or Exceptional Conditions pada openssl. Skor CVSS 3.1 7.5 (High) menurut CISA ADP.
Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send contents of an uninitialized memory buffer to a malicious peer. Impact summary: The uninitialized buffer might contain sensitive data from the previous execution of the application process which leads to sensitive data leakage to an attacker. RSA_public_encrypt() returns the number of bytes written on success and -1 on error. The affected code tests only whether the return value is non-zero. As a result, if RSA encryption fails, encapsulation can still return success to the caller, set the output lengths, and leave the caller to use the contents of the ciphertext buffer as if a valid KEM ciphertext had been produced. If applications use EVP_PKEY_encapsulate() with RSA/RSASVE on an attacker-supplied invalid RSA public key without first validating that key, then this may cause stale or uninitialized contents of the caller-provided ciphertext buffer to be disclosed to the attacker in place of the KEM ciphertext. As a workaround calling EVP_PKEY_public_check() or EVP_PKEY_public_check_quick() before EVP_PKEY_encapsulate() will mitigate the issue. The FIPS modules in 3.6, 3.5, 3.4, 3.3, 3.1 and 3.0 are affected by this issue.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| openssl | openssl | Versi 3.0.0 hingga sebelum 3.0.20 |
| openssl | openssl | Versi 3.3.0 hingga sebelum 3.3.7 |
| openssl | openssl | Versi 3.4.0 hingga sebelum 3.4.5 |
| openssl | openssl | Versi 3.5.0 hingga sebelum 3.5.6 |
| openssl | openssl | Versi 3.6.0 hingga sebelum 3.6.2 |