SARA / Free Tools / CVE / CVE-2023-0217

CVE-2023-0217 — An invalid pointer dereference on read can be triggered when an application trie

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 so

CVSS
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EPSS
0.56% (top 32.10%)
CWE
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Published
2023-02-08T19:02:48.524Z
Last modified
2025-11-04T19:14:35.179Z
CVSS vector
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01What is this vulnerability?

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.

02Affected products

VendorProductVersions
OpenSSLOpenSSL3.0.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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