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CNVD-2021-28731
Vulnerability from cnvd - Published: 2021-04-16
VLAI Severity ?
Title
OpenSSL代码问题漏洞
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 1.1.1d版本、1.1.1e版本和1.1.1f版本中的'SSL_check_chain()'函数存在代码问题漏洞。远程攻击者可利用该漏洞导致服务器或客户端应用程序崩溃。
Severity
中
Patch Name
OpenSSL代码问题漏洞的补丁
Patch 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 1.1.1d版本、1.1.1e版本和1.1.1f版本中的'SSL_check_chain()'函数存在代码问题漏洞。远程攻击者可利用该漏洞导致服务器或客户端应用程序崩溃。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description
目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://www.openssl.org/news/secadv/20200421.txt
Reference
https://nvd.nist.gov/vuln/detail/CVE-2020-1967
Impacted products
| Name | ['Openssl Openssl 1.1.1d', 'Openssl Openssl 1.1.1e', 'Openssl Openssl 1.1.1f'] |
|---|
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"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2021-28731",
"openTime": "2021-04-16",
"patchDescription": "OpenSSL\u662fOpenSSL\u56e2\u961f\u7684\u4e00\u4e2a\u5f00\u6e90\u7684\u80fd\u591f\u5b9e\u73b0\u5b89\u5168\u5957\u63a5\u5c42\uff08SSLv2/v3\uff09\u548c\u5b89\u5168\u4f20\u8f93\u5c42\uff08TLSv1\uff09\u534f\u8bae\u7684\u901a\u7528\u52a0\u5bc6\u5e93\u3002\u8be5\u4ea7\u54c1\u652f\u6301\u591a\u79cd\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5305\u62ec\u5bf9\u79f0\u5bc6\u7801\u3001\u54c8\u5e0c\u7b97\u6cd5\u3001\u5b89\u5168\u6563\u5217\u7b97\u6cd5\u7b49\u3002\r\n\r\nOpenSSL 1.1.1d\u7248\u672c\u30011.1.1e\u7248\u672c\u548c1.1.1f\u7248\u672c\u4e2d\u7684\u0027SSL_check_chain()\u0027\u51fd\u6570\u5b58\u5728\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u670d\u52a1\u5668\u6216\u5ba2\u6237\u7aef\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
"patchName": "OpenSSL\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
"products": {
"product": [
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"Openssl Openssl 1.1.1e",
"Openssl Openssl 1.1.1f"
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},
"referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-1967",
"serverity": "\u4e2d",
"submitTime": "2020-04-22",
"title": "OpenSSL\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e"
}
CVE-2020-1967 (GCVE-0-2020-1967)
Vulnerability from cvelistv5 – Published: 2020-04-21 13:45 – Updated: 2024-09-17 03:13
VLAI?
EPSS
Summary
Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack. OpenSSL version 1.1.1d, 1.1.1e, and 1.1.1f are affected by this issue. This issue did not affect OpenSSL versions prior to 1.1.1d. Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f).
Severity ?
No CVSS data available.
CWE
- NULL pointer dereference
Assigner
References
Impacted products
Credits
Bernd Edlinger
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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