Vulnerability HighRUSTSEC-2020-0015 · openssl-src
RUSTSEC-2020-0015: Crash causing Denial of Service attack
Short answerA security vulnerability in the openssl-src crate: Crash causing Denial of Service attack. High severity (CVSS 7.5). Fixed in 111.9.0: update to a fixed version.
| Crate | openssl-src |
|---|---|
| Type | Vulnerability (denial-of-service) |
| Affected versions | From 111.6.0 before 111.9.0. |
| Fixed in | 111.9.0 |
| 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 | 2020-04-25 |
| Last changed | 2024-07-15 |
| Also known as | CVE-2020-1967, GHSA-jq65-29v4-4x35 |
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 = "111.9.0") 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
Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack.
References
- Package: crates.io/crates/openssl-src
- Advisory: rustsec.org/advisories/RUSTSEC-2020-0015.html
- Web: www.openssl.org/news/secadv/20200421.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 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
- VulnerabilityRUSTSEC-2022-0014 · 2022-03-15Infinite loop in `BN_mod_sqrt()` reachable when parsing certificates
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?