CVE-2023-0217
`NULL` dereference validating DSA public key
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.
How to fix CVE-2023-0217
To remediate CVE-2023-0217, upgrade the affected package to a fixed version below.
- —upgrade to 3.0.8-r0 or later
- —upgrade to 3.0.8-r0 or later
- —upgrade to 300.0.12 or later
- —upgrade to 300.0.12 or later
- —upgrade to 3.0.8-1 or later
Is CVE-2023-0217 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 3.0.8-r0
- from 0, < 3.0.8-r0
- >= 300.0.0, < 300.0.12
- >= 300.0.0, < 300.0.12
- from 0, < 3.0.8-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |