漏洞信息
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Vulnerability Title
AEAD Forgeries with Empty Ciphertext When Using EVP_Cipher()
Vulnerability Description
Issue summary: ChaCha20-Poly1305 and AES-OCB decryption with an empty
ciphertext can report success without verifying the supplied authentication
tag when the operation is finalized by calling the EVP_Cipher() function.
Impact summary: Applications calling EVP_Cipher() on an empty ciphertext and
expecting the call to check the AEAD tag may accept forged messages.
CWE: CWE-354 (Improper Validation of Integrity Check Value)
Description: The EVP_Cipher() API call for AEAD ciphers behaves like a one
shot encryption and decryption call. It also verifies the AEAD tag after the
decryption operation. However for AES-OCB and ChaCha20-Poly1305 ciphers
it skipped the AEAD tag verification when an empty ciphertext was passed to
the function. The callers of this function might believe that a successful
return indicates a valid AEAD tag for these ciphers, even when that has not
truly been validated in this case.
FIPS impact: no
The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this CVE
as the affected algorithms are not FIPS approved and thus not implemented
in the FIPS module.
CVSS Information
N/A
Vulnerability Type
完整性检查值验证不恰当
Vulnerability Title
OpenSSL 加密问题漏洞
Vulnerability Description
OpenSSL是OpenSSL团队开源的一个提供安全通信加密功能的软件库。 OpenSSL 4.0.0版本至4.0.2之前版本、3.6.0版本至3.6.4之前版本、3.5.0版本至3.5.8之前版本、3.4.0版本至3.4.7之前版本和3.0.0版本至3.0.22之前版本存在加密问题漏洞,该漏洞源于对完整性检查值验证不当,当通过EVP_Cipher()函数处理空密文时可能跳过AEAD标签验证,导致应用程序接受伪造消息。
CVSS Information
N/A
Vulnerability Type
N/A