CVE-2022-27779

Public Exploit

Description

libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's "cookie engine" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.17%
Vendor Advisory gentoo.org
Affected: n/a https://github.com/curl/curl
Published at:
Updated at:

References

Link Tags
https://hackerone.com/reports/1553301 third party advisory exploit
https://security.netapp.com/advisory/ntap-20220609-0009/ third party advisory
https://security.gentoo.org/glsa/202212-01 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-27779?
CVE-2022-27779 has been scored as a medium severity vulnerability.
How to fix CVE-2022-27779?
To fix CVE-2022-27779, 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-2022-27779 being actively exploited in the wild?
It is possible that CVE-2022-27779 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.
What software or system is affected by CVE-2022-27779?
CVE-2022-27779 affects n/a https://github.com/curl/curl.
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