本公告载明可能影响部分谦川科技软件产品、组件或版本的安全漏洞信息。谦川科技高度重视产品及客户业务的安全。截至本公告发布之日，谦川科技尚未收到有关上述漏洞已在真实环境中被利用的报告。
| 类别 | 漏洞详情 |
| 产品名称 | Hypervisor |
| 受影响的版本 | MT8676 2os、MT8676 3os、MT8678 2os、MT8678 3os、cobranch、MT8668 2os、MT8668 3os |
| 漏洞编号 | CVE-2021-23841 |
| CVSS评分 | 7.5 |
| 漏洞标题 | Null pointer deref in X509_issuer_and_serial_hash() |
| 详细描述 | The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x). |
| 受影响资产 | Nebula |
| 漏洞类型 | cve |
| 风险等级 | 高危 |
| 修复状态 | 已修复 |
