PT-2018-8407 · Mit+4 · Kerberos+4

Pedrohc · Publicado 2017-11-20 · Atualizado 2023-02-12 · CVE-2017-7562

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Média

Vetor base

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

Name of the Vulnerable Software and Affected Versions Kerberos versions prior to 1.16.1

Description An authentication bypass flaw was found in the way krb5's certauth interface handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.

Recommendations For versions prior to 1.16.1, update to version 1.16.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the certauth interface until a patch is available.

Correção

Improper Certificate Validation

Improper Authentication

Enumeração de Fraquezas

CWE-295

CWE-287

Identificadores relacionados

ALT-PU-2018-2231

CESA-2018_0666

CVE-2017-7562

MGASA-2017-0420

RHSA-2018:0666

RHSA-2018_0666

SUSE-SU-2018:1425-1

SUSE-SU-2018_1425-1

Produtos afetados

Alt Linux

Centos

Kerberos

Red Hat

Suse

Referências · 22

• https://github.com/krb5/krb5/pull/694/commits/b7af544e50a4d8291524f590e20dd44430bf627d · Nota
• https://github.com/krb5/krb5/pull/694 · Correção
• https://github.com/krb5/krb5/pull/694/commits/1de6ca2f2eb1fdbab51f1549a25a6903aefcc196 · Nota
• https://github.com/krb5/krb5/pull/694/commits/50fe4074f188c2d4da0c421e96553acea8378db2 · Nota
• https://osv.dev/vulnerability/CVE-2017-7562 · Aviso do Fabricante
• https://bugs.mageia.org/show_bug.cgi?id=21628 · Nota
• http://securityfocus.com/bid/100511 · Nota
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/2XIPFDWKYB3HQKSWLVJ6AAPFEG6BEPE3 · Aviso do Fabricante
• https://osv.dev/vulnerability/MGASA-2017-0420 · Aviso do Fabricante
• https://osv.dev/vulnerability/SUSE-SU-2018:1425-1 · Aviso do Fabricante
• https://bugzilla.suse.com/1054028 · Nota
• https://linux.oracle.com/errata/ELSA-2018-0666.html · Aviso do Fabricante
• https://nvd.nist.gov/vuln/detail/CVE-2017-7562 · Nota de Segurança
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/2FPRUP4YVOEBGEROUYWZFEQ64HTMGNED · Aviso do Fabricante
• https://bugzilla.suse.com/1055851 · Nota