Vulnerability · Published Jun 16, 2021 · Assigned by GitHub_M

CVE-2021-32685Improper Verification of Cryptographic Signature in tenvoy

Critical 9.8

In plain English

A critical-severity security flaw in tEnvoy from TogaTech. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)0.7%top 48.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

tEnvoy contains the PGP, NaCl, and PBKDF2 in node.js and the browser (hashing, random, encryption, decryption, signatures, conversions), used by TogaTech.org. In versions prior to 7.0.3, the `verifyWithMessage` method of `tEnvoyNaClSigningKey` always returns `true` for any signature that has a SHA-512 hash matching the SHA-512 hash of the message even if the signature was invalid. This issue is patched in version 7.0.3. As a workaround: In `tenvoy.js` under the `verifyWithMessage` method definition within the `tEnvoyNaClSigningKey` class, ensure that the return statement call to `this.verify` ends in `.verified`.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	tenvoy	7.0.3	GHSA-7r96-8g3x-g36m

Affected products (as reported)

Vendor	Product	Versions
TogaTech	tEnvoy	< 7.0.3

Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/TogaTech/tEnvoy/security/advisories/GHSA-7r96-8g3x-g36m x_refsource_CONFIRM
https://github.com/TogaTech/tEnvoy/commit/a121b34a45e289d775c62e58841522891dee686b x_refsource_MISC
https://github.com/TogaTech/tEnvoy/releases/tag/v7.0.3 x_refsource_MISC