In RELIC before 2020-08-01, RSA PKCS#1 v1.5 signature forgery can occur because certain…
Priority LOW 26CWE-327Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-327.
Summary
In RELIC before 2020-08-01, RSA PKCS#1 v1.5 signature forgery can occur because certain checks of the padding (and of the first two bytes) are inadequate. NOTE: this requires that a low public exponent (such as 3) is being used. The product, by default, does not generate RSA keys with such a low number.
Why it matters now
EPSS 0.00928 60th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:relic_project:relic:*:*:*:*:*:*:*:* | before 2020-08-01 | Vulnerable | Relic Project |
- cpe:2.3:a:relic_project:relic:*:*:*:*:*:*:*:* Versions before 2020-08-01 Vulnerable ·Relic Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-36315
- 2026-10-03 Alias added: GHSA-cc5x-p8hp-xch9
References
More Relic Project Relic vulnerabilities
- TI-2023-18210 Integer Overflow vulnerability in RELIC before commit… CVSS 3.1CRITICAL 9.8
- TI-2023-18209 Integer Overflow vulnerability in RELIC before commit… CVSS 3.1CRITICAL 9.8
- TI-2023-28460 An issue in the cp_bbs_sig function in relic/src/cp/relic_cp_bbs.c of Relic relic-toolkit… CVSS 3.1HIGH 8.8
- TI-2020-18599 In RELIC before 2021-04-03, there is a buffer overflow in PKCS#1 v1.5 signature… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2020-36315 · CVE Program
- CVE-2020-36315 · NVD
- FIRST EPSS
- GHSA-cc5x-p8hp-xch9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences