低危 OpenSSL：CVE-2021-3449 signature_algorithms 处理中存在空指针间接引用
CVE编号
CVE-2021-3449利用情况
POC 已公开补丁情况
官方补丁披露时间
2021-10-12漏洞描述
An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).解决建议
厂商已发布了漏洞修复程序，请及时关注更新：https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd受影响软件情况
| # | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
| 1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 运行在以下环境 | |||||||||
| 应用 | openssl | openssl | * | From (including) 1.1.1 | Up to (excluding) 1.1.1k | ||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.10 | openssl | * | Up to (excluding) 1.1.1k-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.11 | openssl | * | Up to (excluding) 1.1.1k-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.12 | openssl | * | Up to (excluding) 1.1.1k-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.13 | openssl | * | Up to (excluding) 1.30.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.14 | openssl | * | Up to (excluding) 1.30.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.15 | openssl | * | Up to (excluding) 1.1.1k-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.16 | openssl | * | Up to (excluding) 1.1.1k-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.17 | openssl | * | Up to (excluding) 1.1.1k-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.18 | openssl | * | Up to (excluding) 1.1.1k-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_3.9 | openssl | * | Up to (excluding) 1.1.1k-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | alpine_edge | openssl | * | Up to (excluding) 1.30.1-r0 | |||||
| 运行在以下环境 | |||||||||
| 系统 | amazon_2 | openssl11 | * | Up to (excluding) 1.1.1g-12.amzn2.0.3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8 | openssl-perl | * | Up to (excluding) 1.1.1c-18 | |||||
| 运行在以下环境 | |||||||||
| 系统 | anolis_os_8.2 | openssl-devel | * | Up to (excluding) 1.1.1c-18 | |||||
| 运行在以下环境 | |||||||||
| 系统 | centos_8 | openssl-debugsource | * | Up to (excluding) 1.1.1g-15.el8_3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_10 | openssl | * | Up to (excluding) 1.1.1d-0+deb10u6 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_11 | openssl | * | Up to (excluding) 1.1.1k-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_12 | openssl | * | Up to (excluding) 1.1.1k-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_9 | openssl | * | Up to (excluding) 1.1.0f-3+deb9u2 | |||||
| 运行在以下环境 | |||||||||
| 系统 | debian_sid | openssl | * | Up to (excluding) 1.1.1k-1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_34 | openssl-debuginfo | * | Up to (excluding) 1.1.1k-1.fc34 | |||||
| 运行在以下环境 | |||||||||
| 系统 | fedora_EPEL_7 | openssl11-debuginfo | * | Up to (excluding) 1.1.1g-3.el7 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP1 | openssl | * | Up to (excluding) 1.1.1f-4.p01.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_aarch64_V10SP2 | openssl | * | Up to (excluding) 1.1.1f-4.p01.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP1 | openssl | * | Up to (excluding) 1.1.1f-4.p01.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | kylinos_x86_64_V10SP2 | openssl | * | Up to (excluding) 1.1.1f-4.p01.ky10 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.2 | nodejs10 | * | Up to (excluding) 1.1.1d-lp152.7.15.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | opensuse_Leap_15.3 | nodejs10 | * | Up to (excluding) 12.22.2-4.16.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | oracle_8 | oraclelinux-release | * | Up to (excluding) 1.1.1g-15.ksplice1.el8_3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | redhat_8 | openssl-debugsource | * | Up to (excluding) 1.1.1g-15.el8_3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | suse_12_SP5 | libopenssl1_1 | * | Up to (excluding) 1.1.1d-2.33.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_16.04.7_lts | openssl | * | Up to (excluding) 1.0.2g-1ubuntu4.19 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04 | postgresql-10 | * | Up to (excluding) 1.1.1-1ubuntu2.1~18.04.9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_18.04.5_lts | openssl | * | Up to (excluding) 1.1.1-1ubuntu2.1~18.04.9 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_20.04 | postgresql-12 | * | Up to (excluding) 12.8-0ubuntu0.20.04.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.04 | postgresql-13 | * | Up to (excluding) 13.4-0ubuntu0.21.04.1 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_21.10 | postgresql-13 | * | Up to (excluding) 1.1.1j-1ubuntu3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.04 | openssl | * | Up to (excluding) 1.1.1j-1ubuntu3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | ubuntu_22.10 | openssl | * | Up to (excluding) 1.1.1j-1ubuntu3 | |||||
| 运行在以下环境 | |||||||||
| 系统 | unionos_a | openssl | * | Up to (excluding) openssl-1.1.1c-17.uelc20.8 | |||||
- 攻击路径 本地
- 攻击复杂度 困难
- 权限要求 普通权限
- 影响范围 有限影响
- EXP成熟度 POC 已公开
- 补丁情况 官方补丁
- 数据保密性 无影响
- 数据完整性 无影响
- 服务器危害 DoS
- 全网数量 N/A
| CWE-ID | 漏洞类型 |
| CWE-476 | 空指针解引用 |
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