CVE-2022-27779 (GCVE-0-2022-27779)

Vulnerability from cvelistv5 – Published: 2022-06-01 00:00 – Updated: 2026-10-14 16:20
VLAI
Summary
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.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-201 - Information Exposure Through Sent Data (CWE-201)
Assigner
hackerone CNA under the mitre root
CNA scorecard D 59/100 over 186 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
n/a https://github.com/curl/curl Affected: Fixed in 7.83.1
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
guessed Create a notification for this product.
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            "lang": "en",
            "value": "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\u0027s \"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."
          },
          {
            "lang": "es",
            "value": "libcurl permite err\u00f3neamente que se establezcan cookies para Dominios de Alto Nivel (TLDs) si el nombre de host es proporcionado con un punto al final. curl puede recibir y enviar cookies. \"cookie engine\" de curl puede construirse con o sin conocimiento de la [Lista de Sufijos P\u00fablicos] (https://publicsuffix.org/). Si no es proporcionado soporte de PSL, se presenta una comprobaci\u00f3n m\u00e1s rudimentaria para al menos evitar que sean establecidas cookies en los TLD. Esta comprobaci\u00f3n no funcionaba si el nombre del host en la URL usaba un punto al final, lo que pod\u00eda permitir que sitios arbitrarios establecieran cookies que sean enviadas a un sitio o dominio diferente y no relacionado"
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  }
}



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