CVE-2023-0215— OpenSSL 资源管理错误漏洞
一分钟漏洞结论
影响对象
OpenSSL OpenSSL
利用判断
利用概率较高，应尽快评估
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存在资源管理错误漏洞，该漏洞源于内存释放后重用。攻击者利用该漏洞导致程序崩溃，系统拒绝服务。
可能的 ATT&CK 技术 1 AI
T1203 · Exploitation for Client Execution
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一、 漏洞 CVE-2023-0215 基础信息
漏洞信息
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Vulnerability Title
Use-after-free following BIO_new_NDEF
来源: CVE Program / CVE List V5
Vulnerability Description
The public API function BIO_new_NDEF is a helper function used for streaming
ASN.1 data via a BIO. It is primarily used internally to OpenSSL to support the
SMIME, CMS and PKCS7 streaming capabilities, but may also be called directly by
end user applications.
The function receives a BIO from the caller, prepends a new BIO_f_asn1 filter
BIO onto the front of it to form a BIO chain, and then returns the new head of
the BIO chain to the caller. Under certain conditions, for example if a CMS
recipient public key is invalid, the new filter BIO is freed and the function
returns a NULL result indicating a failure. However, in this case, the BIO chain
is not properly cleaned up and the BIO passed by the caller still retains
internal pointers to the previously freed filter BIO. If the caller then goes on
to call BIO_pop() on the BIO then a use-after-free will occur. This will most
likely result in a crash.
This scenario occurs directly in the internal function B64_write_ASN1() which
may cause BIO_new_NDEF() to be called and will subsequently call BIO_pop() on
the BIO. This internal function is in turn called by the public API functions
PEM_write_bio_ASN1_stream, PEM_write_bio_CMS_stream, PEM_write_bio_PKCS7_stream,
SMIME_write_ASN1, SMIME_write_CMS and SMIME_write_PKCS7.
Other public API functions that may be impacted by this include
i2d_ASN1_bio_stream, BIO_new_CMS, BIO_new_PKCS7, i2d_CMS_bio_stream and
i2d_PKCS7_bio_stream.
The OpenSSL cms and smime command line applications are similarly affected.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
OpenSSL 资源管理错误漏洞
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存在资源管理错误漏洞，该漏洞源于内存释放后重用。攻击者利用该漏洞导致程序崩溃，系统拒绝服务。
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-2023-0215 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2023-0215 厂商安全公告 (4)
-
https://www.openssl.org/news/secadv/20230207.txt vendor-advisory
CVE-2023-0215 其他参考 (3)
同批安全公告 · OpenSSL · 2023-02-08 · 共 7 条
| CVE-2022-4304 | OpenSSL 安全漏洞 | |
| CVE-2022-4450 | OpenSSL 资源管理错误漏洞 | |
| CVE-2023-0216 | OpenSSL 代码问题漏洞 | |
| CVE-2023-0217 | OpenSSL 代码问题漏洞 | |
| CVE-2023-0286 | OpenSSL 安全漏洞 | |
| CVE-2023-0401 | OpenSSL 代码问题漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2023-0215
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