CVE-2020-36315

MEDIUM

RELIC < 2020-08-01 - RSA PKCS#1 v1.5 Signature Forgery via Inadequate Padding Validation

Title source: llm
STIX 2.1

Description

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.

References (4)

Core 4
Core References
Third Party Advisory x_refsource_misc
https://github.com/relic-toolkit/relic/
Exploit, Third Party Advisory x_refsource_misc
https://github.com/relic-toolkit/relic/issues/154

Scores

CVSS v3 5.3
EPSS 0.0093
EPSS Percentile 55.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Details

CWE
CWE-327
Status published
Products (1)
relic_project/relic < 2020-08-01
Published Apr 07, 2021
Tracked Since Feb 18, 2026