CVE-2004-0189
Estado: ModificadaAlta (7.5)—💥 Exploit
The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists.
CVSS
- Versión: 2.0
- Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 14%
- Percentil entre todas las CVEs puntuadas: 96
- Fecha de la puntuación: 7/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
💥 Exploits públicos
Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.
- Publicado en Exploit-DB · Squid Proxy 2.4/2.5 - NULL URL Character Unauthorized Access (1/3/2004)
Tecnologías afectadas (1)
CWE
- NVD-CWE-Other
Referencias
- ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.16/SCOSA-2005.16.txt
- ftp://patches.sgi.com/support/free/security/advisories/20040404-01-U.asc
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000838
- http://marc.info/?l=bugtraq&m=108084935904110&w=2
- http://security.gentoo.org/glsa/glsa-200403-11.xml
- http://www.debian.org/security/2004/dsa-474
- http://www.mandrakesoft.com/security/advisories?name=MDKSA-2004:025
- http://www.osvdb.org/5916
- http://www.redhat.com/support/errata/RHSA-2004-133.html
- http://www.redhat.com/support/errata/RHSA-2004-134.html
- http://www.securityfocus.com/bid/9778
- http://www.squid-cache.org/Advisories/SQUID-2004_1.txt
- https://exchange.xforce.ibmcloud.com/vulnerabilities/15366
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A877
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A941
- ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.16/SCOSA-2005.16.txt
- ftp://patches.sgi.com/support/free/security/advisories/20040404-01-U.asc
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000838
- http://marc.info/?l=bugtraq&m=108084935904110&w=2
- http://security.gentoo.org/glsa/glsa-200403-11.xml
- http://www.debian.org/security/2004/dsa-474
- http://www.mandrakesoft.com/security/advisories?name=MDKSA-2004:025
- http://www.osvdb.org/5916
- http://www.redhat.com/support/errata/RHSA-2004-133.html
- http://www.redhat.com/support/errata/RHSA-2004-134.html
- http://www.securityfocus.com/bid/9778
- http://www.squid-cache.org/Advisories/SQUID-2004_1.txt
- https://exchange.xforce.ibmcloud.com/vulnerabilities/15366
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A877
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A941
JSON original (NVD)
Mostrar
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"value": "The \"%xx\" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL (\"%00\") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists."
},
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}
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"lastModified": "2026-06-16T22:05:07.943",
"configurations": [
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