CVE-2002-0862 : Détail

CVE-2002-0862

Authorization problems
A07-Identif. and Authent. Fail
6.08%V3
Network
2002-09-10
02h00 +00:00
2018-10-12
17h57 +00:00
CVE.org
NVD
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Descriptions du CVE

The (1) CertGetCertificateChain, (2) CertVerifyCertificateChainPolicy, and (3) WinVerifyTrust APIs within the CryptoAPI for Microsoft products including Microsoft Windows 98 through XP, Office for Mac, Internet Explorer for Mac, and Outlook Express for Mac, do not properly verify the Basic Constraints of intermediate CA-signed X.509 certificates, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack for SSL sessions, as originally reported for Internet Explorer and IIS.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-295 Improper Certificate Validation
The product does not validate, or incorrectly validates, a certificate.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V2 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P [email protected]

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

Score EPSS

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Percentile EPSS

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 21692

Date de publication : 2002-08-05 22h00 +00:00
Auteur : Mike Benham
EDB Vérifié : Yes

source: https://www.securityfocus.com/bid/5410/info A flaw has been reported in the handling of X.509 certificates by a number of products, including several web browsers. It may be possible for a malicious party to create certificates for arbitrary domains, which will be treated as trusted by the vulnerable browser. The flaw lies in the handling of intermediate certificate authorities. Normally, intermediate certificates should possess a Basic Constraints field which states the certificate may be used as a signing authority. Vulnerable products do not require the Basic Constraints field be properly defined. A malicious party with one valid certificate may sign a new certificate for an arbitrary domain. This may allow the attacker to spoof a sensitive domain, or to attempt a man-in-the-middle attack against encrypted communications. This vulnerability was originally reported in Microsoft's Internet Explorer web browser. It has been reported that, in the case of Microsoft Internet Explorer, the flaw lies in some cryptographic functions implemented in the operating system. It should be noted that this flaw has not been reported in the Cryptographic API included with Microsoft Windows. Reports state that IIS 5.0 under Windows 2000 is also vulnerable. In this case, client certificate chains are not properly verified. Attackers may exploit this vulnerability to bypass some authentication schemes. This vulnerability also exists in some versions of KDE and the included Konqueror web browser. Versions 3.0.2 and earlier are vulnerable. ** A report suggests that the patch issued by Microsoft may not fully protect against this vulnerability. It may be possible that a malicious site using an invalid certificate may mislead users into believing that a certificate is expired rather than being invalid. ** UPDATE 11/11/03 - Microsoft has updated their bulletin for this issue. Users who installed Internet Explorer 6 after installing Windows 2000 Service Pack 4 may have reintroduced this issue onto their systems. A new patch is available for users who installed Internet Explorer 6 on Windows 2000 SP4 systems. https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/21692.tar.gz

Products Mentioned

Configuraton 0

Microsoft>>Windows_2000 >> Version -

Microsoft>>Windows_98 >> Version -

Microsoft>>Windows_98se >> Version -

Microsoft>>Windows_me >> Version -

Microsoft>>Windows_nt >> Version 4.0

    Microsoft>>Windows_nt >> Version 4.0

    Microsoft>>Windows_xp >> Version -

    Configuraton 0

    Microsoft>>Internet_explorer >> Version -

    Microsoft>>Office >> Version -

    Microsoft>>Outlook_express >> Version -

    Apple>>Macos >> Version -

    Références

    http://marc.info/?l=bugtraq&m=102918200405308&w=2
    Tags : mailing-list, x_refsource_BUGTRAQ
    http://marc.info/?l=bugtraq&m=102866120821995&w=2
    Tags : mailing-list, x_refsource_BUGTRAQ
    http://marc.info/?l=bugtraq&m=102976967730450&w=2
    Tags : mailing-list, x_refsource_BUGTRAQ