CVE-2019-25003 json
libsecp256k1 contains side-channel timing attack
published 2019-10-14 7 y ago modified 2026-06-17 4 mo ago also GHSA-hrjm-c879-pp86 , RUSTSEC-2019-0027 , EUVD-2021-1757
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
An issue was discovered in the libsecp256k1 crate before 0.3.1 for Rust. Scalar::check_overflow allows a timing side-channel attack; consequently, attackers can obtain sensitive information.
Patch / fix
- crates.io libsecp256k1 0.3.1
- parity libsecp256k1 0.3.1
Exploit prediction
1.70% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | libsecp256k1 | <0.3.1 >=0.0.0-0, <0.3.1 |
0.3.1 |
Classification
- Weakness
-
- CWE-208 Observable Timing Discrepancy
References
-
github.com
/paritytech/libsecp256k1/commit/11ba23a9766a5079918cd9f515bc100bc8164b50
web
-
rustsec.org
/advisories/RUSTSEC-2019-0027.html
web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-25003
advisory
-
github.com
/paritytech/libsecp256k1
package
-
crates.io
/crates/libsecp256k1
package
Sources
- CVE List CVE-2019-25003
- GitHub Advisory GHSA-hrjm-c879-pp86
- NVD CVE-2019-25003
- OSV RUSTSEC-2019-0027
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.