CVE-2024-9681

When curl is asked to use HSTS, the expiry time for a subdomain might overwrite a parent domain's cache entry, making it end sooner or later than otherwise intended. This affects curl using applications that enable HSTS and use URLs with the insecure `HTTP://` scheme and perform transfers with hosts like `x.example.com` as well as `example.com` where the first host is a subdomain of the second host. (The HSTS cache either needs to have been populated manually or there needs to have been previous HTTPS accesses done as the cache needs to have entries for the domains involved to trigger this problem.) When `x.example.com` responds with `Strict-Transport-Security:` headers, this bug can make the subdomain's expiry timeout *bleed over* and get set for the parent domain `example.com` in curl's HSTS cache. The result of a triggered bug is that HTTP accesses to `example.com` get converted to HTTPS for a different period of time than what was asked for by the origin server. If `example.com` for example stops supporting HTTPS at its expiry time, curl might then fail to access `http://example.com` until the (wrongly set) timeout expires. This bug can also expire the parent's entry *earlier*, thus making curl inadvertently switch back to insecure HTTP earlier than otherwise intended.
References
Configurations

Configuration 1 (hide)

cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*

History

13 Dec 2024, 14:15

Type Values Removed Values Added
References
  • () https://security.netapp.com/advisory/ntap-20241213-0006/ -

25 Nov 2024, 19:52

Type Values Removed Values Added
CVSS v2 : unknown
v3 : 5.9
v2 : unknown
v3 : 6.5
CPE cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*
First Time Haxx
Haxx curl
CWE CWE-697
References () https://curl.se/docs/CVE-2024-9681.html - () https://curl.se/docs/CVE-2024-9681.html - Patch, Vendor Advisory
References () https://curl.se/docs/CVE-2024-9681.json - () https://curl.se/docs/CVE-2024-9681.json - Vendor Advisory
References () https://hackerone.com/reports/2764830 - () https://hackerone.com/reports/2764830 - Exploit, Issue Tracking, Patch, Third Party Advisory
References () http://www.openwall.com/lists/oss-security/2024/11/06/2 - () http://www.openwall.com/lists/oss-security/2024/11/06/2 - Mailing List, Patch, Third Party Advisory

21 Nov 2024, 09:54

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2024/11/06/2 -

06 Nov 2024, 17:35

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 5.9
Summary
  • (es) Cuando se le pide a curl que use HSTS, el tiempo de expiración de un subdominio puede sobrescribir la entrada de caché de un dominio principal, lo que hace que finalice antes o después de lo previsto. Esto afecta a curl que usa aplicaciones que habilitan HSTS y usan URL con el esquema inseguro `HTTP://` y realizan transferencias con hosts como `x.example.com` así como `example.com` donde el primer host es un subdominio del segundo host. (El caché HSTS debe haberse llenado manualmente o debe haber habido accesos HTTPS previos ya que el caché debe tener entradas para los dominios involucrados para activar este problema). Cuando `x.example.com` responde con encabezados `Strict-Transport-Security:`, este error puede hacer que el tiempo de expiración del subdominio *se extienda* y se configure para el dominio principal `example.com` en el caché HSTS de curl. El resultado de un error activado es que los accesos HTTP a `example.com` se convierten a HTTPS durante un período de tiempo diferente al solicitado por el servidor de origen. Si `example.com`, por ejemplo, deja de admitir HTTPS en su momento de vencimiento, curl podría entonces no poder acceder a `http://example.com` hasta que expire el tiempo de espera (configurado incorrectamente). Este error también puede hacer que la entrada principal expire *antes*, lo que hace que curl vuelva inadvertidamente a HTTP inseguro antes de lo previsto.

06 Nov 2024, 08:15

Type Values Removed Values Added
New CVE

Information

Published : 2024-11-06 08:15

Updated : 2024-12-13 14:15


NVD link : CVE-2024-9681

Mitre link : CVE-2024-9681

CVE.ORG link : CVE-2024-9681


JSON object : View

Products Affected

haxx

  • curl
CWE
CWE-697

Incorrect Comparison