CVE-2021-32742

Untrusted data fed into `Data.init(base32Encoded:)` can result in exposing server memory and/or crash

Description

Vapor is a web framework for Swift. In versions 4.47.1 and prior, bug in the `Data.init(base32Encoded:)` function opens up the potential for exposing server memory and/or crashing the server (Denial of Service) for applications where untrusted data can end up in said function. Vapor does not currently use this function itself so this only impact applications that use the impacted function directly or through other dependencies. The vulnerability is patched in version 4.47.2. As a workaround, one may use an alternative to Vapor's built-in `Data.init(base32Encoded:)`.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.37%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: vapor vapor
Published at:
Updated at:

References

Link Tags
https://github.com/vapor/vapor/security/advisories/GHSA-pqwh-c2f3-vxmq third party advisory
https://github.com/vapor/vapor/releases/tag/4.47.2 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2021-32742?
CVE-2021-32742 has been scored as a high severity vulnerability.
How to fix CVE-2021-32742?
To fix CVE-2021-32742, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-32742 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-32742 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-32742?
CVE-2021-32742 affects vapor vapor.
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