CVE-2021-33503

HIGH

7.5

Description

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie6/29/2021

Derniere modification11/21/2024

Sourcenvd

Observations honeypot0

Produits affectes

fedoraproject:fedoraoracle:enterprise_manager_ops_centeroracle:instantis_enterprisetrackoracle:zfs_storage_appliance_kitpython:urllib3

Faiblesses (CWE)

CWE-400

References

https://github.com/advisories/GHSA-q2q7-5pp4-w6pg(cve@mitre.org)

https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec(cve@mitre.org)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6SCV7ZNAHS3E6PBFLJGENCDRDRWRZZ6W/(cve@mitre.org)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FMUGWEAUYGGHTPPXT6YBD53WYXQGVV73/(cve@mitre.org)

https://security.gentoo.org/glsa/202107-36(cve@mitre.org)

https://www.oracle.com/security-alerts/cpuoct2021.html(cve@mitre.org)

https://github.com/advisories/GHSA-q2q7-5pp4-w6pg(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6SCV7ZNAHS3E6PBFLJGENCDRDRWRZZ6W/(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FMUGWEAUYGGHTPPXT6YBD53WYXQGVV73/(af854a3a-2127-422b-91ae-364da2661108)

https://security.gentoo.org/glsa/202107-36(af854a3a-2127-422b-91ae-364da2661108)

https://www.oracle.com/security-alerts/cpuoct2021.html(af854a3a-2127-422b-91ae-364da2661108)

Correlations IOC

Aucune correlation enregistree

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