CVE-2023-0217
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Openssl
PublishedFeb 8, 2023
First seenFeb 8, 2023
Weakness typeCWE-476NULL pointer dereference
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openssl openssl | 3.0.0 ≤ v ≤ 3.0.7 | — |
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