GHSA-c35v-qwqg-87jc express-basic-auth Timing Attack due to native string comparison instead of constant time string comparison
Attackers can exploit timing differences in string comparison to efficiently brute-force basic authentication credentials.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-c35v-qwqg-87jc?
GHSA-c35v-qwqg-87jc is a vulnerability in express-basic-auth, published on 6 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Versions of express-basic-auth prior to 1.1.7 are vulnerable to Timing Attacks. The package uses native string comparison instead of a constant time string comparison, which may lead to Timing Attacks. Timing Attacks can be used to increase the efficiency of brute-force attacks by removing the exponential increase in entropy gained from longer secrets.
Recommendation
Upgrade to version 1.1.7 or later.
Which versions are affected by GHSA-c35v-qwqg-87jc?
2 open source packages ship an affected version, including express-basic-auth.
| Package | Affected | Fixed in |
|---|---|---|
express-basic-auth npm | All versions | 1.1.7 |
express-basic-auth npm | All versions | 1.1.7 |
How do I fix GHSA-c35v-qwqg-87jc?
Upgrade express-basic-auth to 1.1.7 or later.
Is GHSA-c35v-qwqg-87jc being exploited?
There is no known exploitation of GHSA-c35v-qwqg-87jc in the wild and no public exploit code.