Vulnerability CriticalRUSTSEC-2018-0010 · openssl
RUSTSEC-2018-0010: Use after free in CMS Signing
Short answerA security vulnerability in the openssl crate: Use after free in CMS Signing. Critical severity (CVSS 9.8). Fixed in 0.10.9: update to a fixed version.
| Crate | openssl |
|---|---|
| Type | Vulnerability |
| Affected versions | From 0.10.8 before 0.10.9. |
| Fixed in | 0.10.9 |
| Severity | Critical, CVSS 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2018-06-01 |
| Last changed | 2023-11-08 |
| Also known as | CVE-2018-20997, GHSA-xjxc-vfw2-cg96 |
What to do
- See which version you have:
cargo tree -i openssl(it also shows which of your dependencies pulls it in). - Update within your version requirement:
cargo update -p openssl. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for exampleopenssl = "0.10.9") 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
Affected versions of the OpenSSL crate used structures after they'd been freed.
References
- Package: crates.io/crates/openssl
- Advisory: rustsec.org/advisories/RUSTSEC-2018-0010.html
- Web: github.com/sfackler/rust-openssl/pull/942
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
- Vulnerability HighRUSTSEC-2016-0001 · 2016-11-05SSL/TLS MitM vulnerability due to insecure defaults
- VulnerabilityRUSTSEC-2023-0022 · 2023-03-24`openssl` `X509NameBuilder::build` returned object is not thread safe
- VulnerabilityRUSTSEC-2023-0023 · 2023-03-24`openssl` `SubjectAlternativeName` and `ExtendedKeyUsage::other` allow arbitrary file read
- VulnerabilityRUSTSEC-2023-0024 · 2023-03-24`openssl` `X509Extension::new` and `X509Extension::new_nid` null pointer dereference
- VulnerabilityRUSTSEC-2023-0044 · 2023-06-20`openssl` `X509VerifyParamRef::set_host` buffer over-read
- UnsoundRUSTSEC-2023-0072 · 2023-11-23`openssl` `X509StoreRef::objects` is unsound
- VulnerabilityRUSTSEC-2024-0357 · 2024-07-21`MemBio::get_buf` has undefined behavior with empty buffers
- VulnerabilityRUSTSEC-2025-0004 · 2025-02-02ssl::select_next_proto use after free
Up next
Same crateopenssl: security historyEvery advisory for this crate, and whether it is safe to use today.Read it next →Did this answer your question?