Http4s has fatal error parsing User-Agent and Server headers
CVE-2023-22465

7.5HIGH

Key Information:

Vendor

Http4s

Status
Http4s
Vendor
CVE Published:
4 January 2023

What is CVE-2023-22465?

The Http4s library, which provides a Scala interface for HTTP services, has a vulnerability in its User-Agent and Server header parsers. This issue can lead to a fatal error when certain inputs are processed. The vulnerability affects versions starting from 0.1.0 and prior to the fix releases of 0.21.34, 0.22.15, 0.23.17, and 1.0.0-M38. It's important to note that the error occurs due to the library's lazy parsing of modeled headers, making it relevant only for services that specifically request these typed headers. Users are advised to upgrade to the patched versions to mitigate potential risks or alternatively utilize the weakly typed header interface as a temporary workaround.

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Affected Version(s)

http4s >= 0.1.0, < 0.21.34 < 0.1.0, 0.21.34

http4s >= 0.22.0, < 0.22.15 < 0.22.0, 0.22.15

http4s >= 0.23.0, < 0.23.17 < 0.23.0, 0.23.17

References

https://github.com/http4s/http4s/security/advisories/GHSA...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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