CVE-2026-95692— AES-GCM-SIV 越界读取及 IV 处理漏洞
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。
问题摘要： 通过 设置一个短于预期 nonce 长度的 AES-GCM-SIV 初始化向量（IV），可能触发堆越界读取漏洞。若提供过长的 IV，系统会静默截断而非拒绝该输入。 影响摘要： 若应用程序传入由调用方提供的、长度错误的 IV，可能导致程序崩溃或读取超出其缓冲区范围的数据。由于 IV 的尾部字节会被忽略，攻击者若已知某条消息及其对应的认证标签，便可在另一个 IV 下伪造出能通过验证的消息（只要新 IV 的前缀字节与已知 IV 匹配）。 CWE 编号：CWE-125：越界读取 详细描述： AES-GCM-SI
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2026-95692 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
Out-of-Bounds Read and Incorrect IV Length Handling in AES-GCM-SIV
来源: CVE Program / CVE List V5
Vulnerability Description
Issue summary: Setting an AES-GCM-SIV IV shorter than the expected nonce
length via EVP_CipherInit_ex() may trigger a heap out-of-bounds read.
Supplying a longer IV is silently truncated instead of rejected.
Impact summary: An application passing a caller-supplied IV of the wrong
length may crash or read beyond its buffer. Because trailing IV bytes are
ignored, an attacker who knows one message and tag may forge messages under a
different IV.
CWE: CWE-125: Out-of-bounds Read
Description: AES-GCM-SIV copies the caller-supplied IV or nonce into its
internal state using a copy whose length is taken from the expected nonce size
rather than from the length the caller actually provided. When the caller
passes a shorter IV, the copy reads past the end of the caller's buffer;
AddressSanitizer confirms a heap out-of-bounds read reached through
EVP_CipherInit_ex() into ossl_aes_gcm_siv_init(). When the caller passes a
longer IV, the implementation silently discards the trailing bytes instead of
rejecting the length.
The truncation breaks the binding between the IV and the computed
authentication tag. An attacker who has observed a message and its tag under
one IV can produce a message and tag that verify under a different IV whose
first bytes match, since the surplus bytes never influence the computation.
The message itself is unchanged, so this is a failure of IV commitment rather
than a classic existential forgery.
Only applications that call EVP_CipherInit_ex() (or the equivalent provider
cipher initialization) with an IV length other than the standard 12 bytes for
AES-GCM-SIV are affected. The severity is limited because the out-of-bounds
read is small and attacker-controlled only in length, and the forgery requires
an unusual IV length choice by the application.
FIPS impact: no
The FIPS modules are not affected by this issue, as AES-GCM-SIV is not an
approved algorithm.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-95692 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2026-95692 的情报信息
请登录查看更多情报信息。
CVE-2026-95692 补丁与修复 (3)
CVE-2026-95692 厂商安全公告 (1)
-
🔗 https://openssl-library.org/news/secadv/20261110.txt vendor-advisory
同批安全公告 · OpenSSL · 2026-11-10 · 共 5 条
| CVE-2026-107496 | OpenSSL CMS_encrypt() 无限循环漏洞 | |
| CVE-2026-95691 | QUIC 重传 CRYPTO 帧导致拒绝服务或信息泄露 | |
| CVE-2026-88823 | AES-GCM-SIV 零长度增量 AAD 更新后 AAD 伪造漏洞 | |
| CVE-2026-88822 | QUIC 自动对等检测未初始化栈字节漏洞 |