GHSA-g636-q5fc-4pr7 accounts: Hash account number using Salt
Unsalted hashing of account numbers allows attackers to reverse hashes via rainbow tables, exposing sensitive customer data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-g636-q5fc-4pr7?
GHSA-g636-q5fc-4pr7 is a vulnerability in github.com/moov-io/customers, published on 24 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
@alovak found that currently when we build hash of account number we do not "salt" it. Which makes it vulnerable to rainbow table attack.
What did you expect to see? I expected salt (some random number from configuration) to be used in hash.AccountNumber
I would generate salt per tenant at least (maybe per organization).
Which versions are affected by GHSA-g636-q5fc-4pr7?
2 open source packages ship an affected version, including github.com/moov-io/customers.
| Package | Affected | Fixed in |
|---|---|---|
github.com/moov-io/customers Go | All versions | 0.5.0 |
github.com/moov-io/customers Go | All versions | 0.5.0 |
How do I fix GHSA-g636-q5fc-4pr7?
Upgrade github.com/moov-io/customers to 0.5.0 or later.
Is GHSA-g636-q5fc-4pr7 being exploited?
There is no known exploitation of GHSA-g636-q5fc-4pr7 in the wild and no public exploit code.