CVE-2023-0217— NULL dereference validating DSA public key
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I. Basic Information for CVE-2023-0217
Vulnerability Information
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Vulnerability Title
NULL dereference validating DSA public key
Source: NVD (National Vulnerability Database)
Vulnerability Description
An invalid pointer dereference on read can be triggered when an application tries to check a malformed DSA public key by the EVP_PKEY_public_check() function. This will most likely lead to an application crash. This function can be called on public keys supplied from untrusted sources which could allow an attacker to cause a denial of service attack. The TLS implementation in OpenSSL does not call this function but applications might call the function if there are additional security requirements imposed by standards such as FIPS 140-3.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenSSL 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
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存在安全漏洞。攻击者利用该漏洞导致程序崩溃，系统拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-0217
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- https://www.openssl.org/news/secadv/20230207.txtvendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2023-0217
Same Patch Batch · OpenSSL · 2023-02-08 · 7 CVEs total
| CVE-2022-4304 | Timing Oracle in RSA Decryption | |
| CVE-2022-4450 | Double free after calling PEM_read_bio_ex | |
| CVE-2023-0215 | Use-after-free following BIO_new_NDEF | |
| CVE-2023-0216 | Invalid pointer dereference in d2i_PKCS7 functions | |
| CVE-2023-0286 | X.400 address type confusion in X.509 GeneralName | |
| CVE-2023-0401 | NULL dereference during PKCS7 data verification |
IV. Related Vulnerabilities
Same product: OpenSSL
- CVE-2026-31790
Incorrect Failure Handling in RSA KEM RSASVE Encapsulation - CVE-2026-31789
Heap Buffer Overflow in Hexadecimal Conversion - CVE-2026-28390
Possible NULL Dereference When Processing CMS KeyTransportRe - CVE-2026-28389
Possible NULL Dereference When Processing CMS KeyAgreeRecipi - CVE-2026-28388
NULL Pointer Dereference When Processing a Delta CRL
Same vendor: OpenSSL
- CVE-2026-31790
Incorrect Failure Handling in RSA KEM RSASVE Encapsulation - CVE-2026-31789
Heap Buffer Overflow in Hexadecimal Conversion - CVE-2026-28390
Possible NULL Dereference When Processing CMS KeyTransportRe - CVE-2026-28389
Possible NULL Dereference When Processing CMS KeyAgreeRecipi - CVE-2026-28388
NULL Pointer Dereference When Processing a Delta CRL
V. Comments for CVE-2023-0217
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