Vulnerability MediumRUSTSEC-2022-0027 · openssl-src
RUSTSEC-2022-0027: `OCSP_basic_verify` may incorrectly verify the response signing certificate
Short answerA security vulnerability in the openssl-src crate: `OCSP_basic_verify` may incorrectly verify the response signing certificate. Medium severity (CVSS 5.3). Fixed in 300.0.6: update to a fixed version.
| Crate | openssl-src |
|---|---|
| Type | Vulnerability (crypto-failure) |
| Affected versions | From 300.0.0 before 300.0.6. |
| Fixed in | 300.0.6 |
| Severity | Medium, CVSS 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| Published | 2022-05-03 |
| Last changed | 2023-11-08 |
| Also known as | CVE-2022-1343, GHSA-mfm6-r9g2-q4r7 |
What to do
- See which version you have:
cargo tree -i openssl-src(it also shows which of your dependencies pulls it in). - Update within your version requirement:
cargo update -p openssl-src. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for exampleopenssl-src = "300.0.6") or update the dependency that pulls it in. - Check again with
cargo audit, or paste your Cargo.lock into our Cargo.toml checker.
Details from the advisory
The function OCSP_basic_verify verifies the signer certificate on an OCSP response. In the case where the (non-default) flag OCSP_NOCHECKS is used then the response will be positive (meaning a successful verification) even in the case where the response signing certificate fails to verify.
It is anticipated that most users of OCSP_basic_verify will not use the OCSP_NOCHECKS flag. In this case the OCSP_basic_verify function will return a negative value (indicating a fatal error) in the case of a certificate verification failure. The normal expected return value in this case would be 0.
References
- Package: crates.io/crates/openssl-src
- Advisory: rustsec.org/advisories/RUSTSEC-2022-0027.html
- Web: www.openssl.org/news/secadv/20220503.txt
From the RustSec Advisory Database (CC0-1.0) via the OSV export, downloaded Oct 24, 2026. Severity score computed from the published CVSS vector.
Other advisories for openssl-src
- Vulnerability HighRUSTSEC-2020-0015 · 2020-04-25Crash causing Denial of Service attack
- Vulnerability MediumRUSTSEC-2021-0055 · 2021-05-01NULL pointer deref in signature_algorithms processing
- Vulnerability HighRUSTSEC-2021-0056 · 2021-05-01CA certificate check bypass with X509_V_FLAG_X509_STRICT
- Vulnerability HighRUSTSEC-2021-0057 · 2021-05-01Integer overflow in CipherUpdate
- Vulnerability MediumRUSTSEC-2021-0058 · 2021-05-01Null pointer deref in `X509_issuer_and_serial_hash()`
- Vulnerability CriticalRUSTSEC-2021-0097 · 2021-08-24SM2 Decryption Buffer Overflow
- Vulnerability HighRUSTSEC-2021-0098 · 2021-08-24Read buffer overruns processing ASN.1 strings
- VulnerabilityRUSTSEC-2021-0129 · 2021-12-14Invalid handling of `X509_verify_cert()` internal errors in libssl
Up next
Same crateopenssl-src: security historyEvery advisory for this crate, and whether it is safe to use today.Read it next →Did this answer your question?