CVE-2022-27779

moderate-risk
Published 2022-06-02

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.

Do I need to act?

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0.27% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (12)

Affected Vendors

Haxx Netapp Splunk

References (6)

Exploit https://hackerone.com/reports/1553301
Third Party Advisory https://security.gentoo.org/glsa/202212-01
Third Party Advisory https://security.netapp.com/advisory/ntap-20220609-0009/
Exploit https://hackerone.com/reports/1553301
Third Party Advisory https://security.gentoo.org/glsa/202212-01
Third Party Advisory https://security.netapp.com/advisory/ntap-20220609-0009/
39
/ 100
moderate-risk
Severity 21/34 · High
Exploitability 1/34 · Minimal
Exposure 17/34 · Moderate