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No exploitation reportedFix available

CVE-2023-0217

No exploitation reported by the sources we read.

  • Published2023-02-08
  • WeaknessCWE-476

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2023-02-0820:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-0217?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-0217?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
OpenSSL
BranchAffectedFixed in
3.0≥ 3.0.0, ≤ 3.0.7no fix published
openssl-src
BranchAffectedFixed in
300.0≥ 300.0.0, < 300.0.12300.0.12

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • opensslAlmaLinux:9all versions · fixed in 1:3.0.1-47.el9_1and 3 other packages

Vendor advisories

  • ICSA-25-065-01 CISA3 products fixed · 3 known affected

    Hitachi Energy PCU400

    PCU400 versions 6.5 K and below · PCU400 versions 9.4.1 and below · PCULogger versions 1.1.0 and below

  • ICSA-23-320-08 CISA71 known affected

    Siemens SCALANCE Family Products

    SCALANCE XB205-3 (SC, PN) (6GK5205-3BB00-2AB2) · SCALANCE XB205-3 (ST, E/IP) (6GK5205-3BB00-2TB2) · SCALANCE XB205-3 (ST, E/IP) (6GK5205-3BD00-2TB2) · +68 more

Full record on NVD

Fix

  1. Vendor fix CISA ICSA-25-065-01 · 1 productIf IEC62351-3 secure for IEC104/DNP3 is used, then update to version 6.6.0 or latest
  2. Vendor fix CISA ICSA-25-065-01 · 1 productIf IEC62351-3 secure for IEC104/DNP3 is used, then update to version 9.4.2 or latest
  3. Vendor fix CISA ICSA-23-320-08 · 71 productsUpdate to V4.5 or later version
  4. No fix planned, says the vendor CISA ICSA-25-065-01 · 1 productIf the PCULogger program is used, then update to version 1.2.0* when available. This version is compatible with PCU400 9.4.2 and later

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-04-23
  • OpenCVESSVC decisionnone—
  • CISA-ADPCVSS 3.17.52025-05-05
  • NVDCVSS 3.17.5read 2026-10-23
  • CISA-ADPweakness (CWE)CWE-4762025-05-05
  • NVDweakness (CWE)CWE-476read 2026-10-23
  • FIRST EPSSEPSS score1.8 %2026-10-22
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2023-02-08
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-0217?

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.

Is CVE-2023-0217 actively exploited?

Active exploitation of CVE-2023-0217 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-0217?

CVE-2023-0217 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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