PT-2021-11999 · Relic · Relic

One-W01F · Published 2021-04-07 · Updated 2022-07-12 · CVE-2020-36315

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions: RELIC versions prior to 2020-08-01

Description: The issue allows RSA PKCS#1 v1.5 signature forgery due to inadequate checks of the padding and the first two bytes. This requires a low public exponent, such as 3, which is not the default for generated RSA keys.

Recommendations: For versions prior to 2020-08-01, consider updating to a version released after 2020-08-01 to resolve the issue. As a temporary workaround, avoid using low public exponents, such as 3, for RSA keys.

Exploit

Fix

Use of a Broken Cryptographic Algorithm

Weakness Enumeration

CWE-327

Related Identifiers

CVE-2020-36315

Affected Products

Relic

References · 7

• 🔥 https://github.com/relic-toolkit/relic/issues/154 · Exploit
• https://github.com/relic-toolkit/relic/commit/76c9a1fdf19d9e92e566a77376673e522aae9f80 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-36315 · Security Note
• https://osv.dev/vulnerability/CVE-2020-36315 · Vendor Advisory
• https://github.com/relic-toolkit/relic/tree/32eb4c257fc80328061d66639b1cdb35dbed51a2 · Note
• https://t.me/cvenotify/13348 · Telegram Post
• https://github.com/relic-toolkit/relic · Note