CVE-2020-11093
Hyperledger Indy Node Signature Verification Bypass
Description
Hyperledger Indy Node is the server portion of a distributed ledger purpose-built for decentralized identity. In Hyperledger Indy before version 1.12.4, there is lack of signature verification on a specific transaction which enables an attacker to make certain unauthorized alterations to the ledger. Updating a DID with a nym transaction will be written to the ledger if neither ROLE or VERKEY are being changed, regardless of sender. A malicious DID with no particular role can ask an update for another DID (but cannot modify its verkey or role). This is bad because 1) Any DID can write a nym transaction to the ledger (i.e., any DID can spam the ledger with nym transactions), 2) Any DID can change any other DID's alias, 3) The update transaction modifies the ledger metadata associated with a DID.
INFO
Published Date :
Dec. 24, 2020, 8:15 p.m.
Last Modified :
Dec. 31, 2020, 7:25 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-11093.
| URL | Resource |
|---|---|
| https://github.com/hyperledger/indy-node/blob/master/CHANGELOG.md#1124 | Release Notes Third Party Advisory |
| https://github.com/hyperledger/indy-node/blob/master/docs/source/auth_rules.md | Third Party Advisory |
| https://github.com/hyperledger/indy-node/commit/55056f22c83b7c3520488b615e1577e0f895d75a | Patch Third Party Advisory |
| https://github.com/hyperledger/indy-node/security/advisories/GHSA-wh2w-39f4-rpv2 | Exploit Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-11093 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-11093 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Dec. 31, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://github.com/hyperledger/indy-node/blob/master/CHANGELOG.md#1124 No Types Assigned https://github.com/hyperledger/indy-node/blob/master/CHANGELOG.md#1124 Release Notes, Third Party Advisory Changed Reference Type https://github.com/hyperledger/indy-node/blob/master/docs/source/auth_rules.md No Types Assigned https://github.com/hyperledger/indy-node/blob/master/docs/source/auth_rules.md Third Party Advisory Changed Reference Type https://github.com/hyperledger/indy-node/commit/55056f22c83b7c3520488b615e1577e0f895d75a No Types Assigned https://github.com/hyperledger/indy-node/commit/55056f22c83b7c3520488b615e1577e0f895d75a Patch, Third Party Advisory Changed Reference Type https://github.com/hyperledger/indy-node/security/advisories/GHSA-wh2w-39f4-rpv2 No Types Assigned https://github.com/hyperledger/indy-node/security/advisories/GHSA-wh2w-39f4-rpv2 Exploit, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:linuxfoundation:indy-node:*:*:*:*:*:*:*:* versions up to (excluding) 1.12.4 -
CVE Modified by [email protected]
Dec. 24, 2020
Action Type Old Value New Value Changed Description Hyperledger Indy Node is the server portion of a distributed ledger purpose-built for decentralized identity. In Hyperledger Indy before version 1.12.4, there is lack of signature verification on a specific transaction which enables an attacker to make certain unauthorized alterations to the ledger. Updating a DID with a nym transaction will be written to the ledger if neither ROLE or VERKEY are being changed, regardless of sender. A malicious DID with no particular role can ask an update for another DID (but cannot modify its verkey or role). This is bad because 1) Any DID can write a nym transaction to the ledger (i.e., any DID can spam the ledger with nym transactions), 2) Any DID can change any other DID's alias, 3) The update transaction modifies the ledger metadata associated with a DID. Hyperledger Indy Node is the server portion of a distributed ledger purpose-built for decentralized identity. In Hyperledger Indy before version 1.12.4, there is lack of signature verification on a specific transaction which enables an attacker to make certain unauthorized alterations to the ledger. Updating a DID with a nym transaction will be written to the ledger if neither ROLE or VERKEY are being changed, regardless of sender. A malicious DID with no particular role can ask an update for another DID (but cannot modify its verkey or role). This is bad because 1) Any DID can write a nym transaction to the ledger (i.e., any DID can spam the ledger with nym transactions), 2) Any DID can change any other DID's alias, 3) The update transaction modifies the ledger metadata associated with a DID.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-11093 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-11093
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.18 }} 0.02%
score
0.54411
percentile