CVE-2026-45446— OpenSSL 安全漏洞
一分钟漏洞结论
影响对象
OpenSSL OpenSSL
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
OpenSSL是OpenSSL团队的一个开源的能够实现安全套接层（SSLv2/v3）和安全传输层（TLSv1）协议的通用加密库。该产品支持多种加密算法，包括对称密码、哈希算法、安全散列算法等。 OpenSSL存在安全漏洞，该漏洞源于AES-SIV和AES-GCM-SIV实现错误处理空密文时的AAD认证，允许攻击者伪造具有任意AAD的空消息。
可能的 ATT&CK 技术 1 AI
T1190 · Exploit Public-Facing Application
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一、 漏洞 CVE-2026-45446 基础信息
漏洞信息
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Vulnerability Title
Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes
来源: CVE Program / CVE List V5
Vulnerability Description
Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV
(RFC 8452) mishandle the authentication of AAD (Additional Authenticated
Data) with an empty ciphertext allowing a forgery of such messages.
Impact summary: An attacker can forge empty messages with arbitrary AAD
to the victim's application using these ciphers.
AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) are nonce-misuse-resistant AEAD
modes: they accept a key, nonce, optional AAD (bytes that are authenticated
but not encrypted), and plaintext, and produces ciphertext plus a 16-byte
tag. On decrypt, `EVP_DecryptFinal_ex()` is documented to return success only
if the tag is verified succesfully.
In OpenSSL's provider implementation of these ciphers, the expected tag is
computed only when decryption function is invoked with non-empty data.
If the caller supplies AAD and then calls `EVP_DecryptFinal_ex()` without
invocation of the ciphertext update, which can happen when the received
ciphertext length is zero, the tag is never recalculated and still holds its
all-zeros value.
When AES-GCM-SIV is used, an attacker who sends arbitrary AAD, empty
ciphertext, and all-zeros tag passes authentication under any key they do not
know, single-shot. When AES-SIV is used, for mounting the attack it's
necessary for the application to reuse the decryption context without
resetting the key.
AES-SIV is implemented since OpenSSL 3.0. AES-GCM-SIV is implemented since
OpenSSL 3.2.
No protocols implemented in OpenSSL itself (TLS/CMS/PKCS7/HPKE/QUIC) support
either AES-GCM-SIV or AES-SIV. To mount an attack, the applications must
implement their own protocol and use the EVP interface. Also they must skip the
ciphertext update when a message with an empty ciphertext arrives.
The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this
issue, as these algorithms are not FIPS approved and the affected code is
outside the OpenSSL FIPS module boundary.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
缺少必要的密码学步骤
来源: CVE Program / CVE List V5
Vulnerability Title
OpenSSL 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
OpenSSL是OpenSSL团队的一个开源的能够实现安全套接层（SSLv2/v3）和安全传输层（TLSv1）协议的通用加密库。该产品支持多种加密算法，包括对称密码、哈希算法、安全散列算法等。 OpenSSL存在安全漏洞，该漏洞源于AES-SIV和AES-GCM-SIV实现错误处理空密文时的AAD认证，允许攻击者伪造具有任意AAD的空消息。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-45446 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-45446 补丁与修复 (5)
CVE-2026-45446 厂商安全公告 (1)
同批安全公告 · OpenSSL · 2026-06-09 · 共 18 条
| CVE-2026-45447 | OpenSSL 资源管理错误漏洞 | |
| CVE-2026-34183 | OpenSSL 安全漏洞 | |
| CVE-2026-34181 | OpenSSL 安全漏洞 | |
| CVE-2026-34180 | OpenSSL 缓冲区错误漏洞 | |
| CVE-2026-34182 | OpenSSL 安全漏洞 | |
| CVE-2026-9076 | OpenSSL 缓冲区错误漏洞 | |
| CVE-2026-35188 | OpenSSL 资源管理错误漏洞 | |
| CVE-2026-7383 | OpenSSL 缓冲区错误漏洞 | |
| CVE-2026-45445 | OpenSSL 安全漏洞 | |
| CVE-2026-42771 | OpenSSL 缓冲区错误漏洞 | |
| CVE-2026-42768 | OpenSSL 安全漏洞 | |
| CVE-2026-42769 | OpenSSL 信任管理问题漏洞 | |
| CVE-2026-42767 | OpenSSL 代码问题漏洞 | |
| CVE-2026-42766 | OpenSSL 代码问题漏洞 | |
| CVE-2026-42764 | OpenSSL 代码问题漏洞 | |
| CVE-2026-42770 | OpenSSL 安全漏洞 | |
| CVE-2026-42765 | OpenSSL 代码问题漏洞 |
IV. Related Vulnerabilities
Same product: OpenSSL
-
CVE-2026-84784
QUIC: Unbounded RETIRE_CONNECTION_ID Backlog -
CVE-2026-84783
Use-After-Free in X.509 Extension Cache Under Concurrent Use -
CVE-2026-84782
DTLS Retransmits Handshake Messages From a Stale Buffer Offs -
CVE-2026-77696
Timing Side-Channel in SM2 Signature Generation -
CVE-2026-75806
Unauthenticated and Undersized DTLS 1.2 AEAD Record Causes D
Same vendor: OpenSSL
-
CVE-2026-84784
QUIC: Unbounded RETIRE_CONNECTION_ID Backlog -
CVE-2026-84783
Use-After-Free in X.509 Extension Cache Under Concurrent Use -
CVE-2026-84782
DTLS Retransmits Handshake Messages From a Stale Buffer Offs -
CVE-2026-77696
Timing Side-Channel in SM2 Signature Generation -
CVE-2026-75806
Unauthenticated and Undersized DTLS 1.2 AEAD Record Causes D
V. Comments for CVE-2026-45446
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