CVE-2019-14243

Public Exploit

Description

headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service (webserver panic and daemon crash) via a crafted HAProxy PROXY v2 request with truncated source/destination address data.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.38%
Third-Party Advisory caddy.community Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://caddy.community/t/dos-in-http-proxyprotocol-plugin/6014 third party advisory
https://github.com/mastercactapus/proxyprotocol/issues/1 third party advisory exploit
https://github.com/mastercactapus/caddy-proxyprotocol/issues/8 issue tracking third party advisory
https://github.com/mastercactapus/proxyprotocol/compare/ef496d7...5c4a101 third party advisory
https://github.com/mastercactapus/proxyprotocol/commit/5c4a101121fc3e868026189c7a73f7f19eef90ac third party advisory patch
https://github.com/mastercactapus/proxyprotocol/releases/tag/v0.0.2 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2019-14243?
CVE-2019-14243 has been scored as a high severity vulnerability.
How to fix CVE-2019-14243?
To fix CVE-2019-14243, 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-2019-14243 being actively exploited in the wild?
It is possible that CVE-2019-14243 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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