Vulnerability HighRUSTSEC-2022-0025 · openssl-src
RUSTSEC-2022-0025: Resource leakage when decoding certificates and keys
Short answerA security vulnerability in the openssl-src crate: Resource leakage when decoding certificates and keys. High severity (CVSS 7.5). Fixed in 300.0.6: update to a fixed version.
| Crate | openssl-src |
|---|---|
| Type | Vulnerability (denial-of-service) |
| Affected versions | From 300.0.0 before 300.0.6. |
| Fixed in | 300.0.6 |
| Severity | High, CVSS 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Published | 2022-05-03 |
| Last changed | 2023-11-08 |
| Also known as | CVE-2022-1473, GHSA-g323-fr93-4j3c |
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 OPENSSL_LH_flush() function, which empties a hash table, contains a bug that breaks reuse of the memory occupied by the removed hash table entries.
This function is used when decoding certificates or keys. If a long lived process periodically decodes certificates or keys its memory usage will expand without bounds and the process might be terminated by the operating system causing a denial of service. Also traversing the empty hash table entries will take increasingly more time.
Typically such long lived processes might be TLS clients or TLS servers configured to accept client certificate authentication.
References
- Package: crates.io/crates/openssl-src
- Advisory: rustsec.org/advisories/RUSTSEC-2022-0025.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?