PT-2012-1158 · Openssh+4 · Openssh+4
Publicado
2012-04-04
·
Atualizado
2024-07-08
·
CVE-2011-5000
CVSS v2.0
7.5
Alta
| Vetor | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Name of the Vulnerable Software and Affected Versions
OpenSSH versions 5.8 and earlier
Description
The issue allows remote authenticated users to cause a denial of service, specifically memory consumption, when gssapi-with-mic authentication is enabled. This is due to the
ssh gssapi parse ename function in gss-serv.c not properly handling large values in a certain length field. There may be limited scenarios in which this issue is relevant. Additionally, exploitation of vulnerabilities in OpenSSH may lead to disruption of confidentiality, integrity, and availability of protected information, and can be exploited remotely.Recommendations
For OpenSSH versions 5.8 and earlier, consider updating to a version later than 5.8 to resolve the issue. As a temporary workaround, consider disabling gssapi-with-mic authentication until a patch is available. Restrict access to the
ssh gssapi parse ename function to minimize the risk of exploitation. Avoid using large values in certain length fields in the affected API endpoint until the issue is resolved.Exploit
Correção
DoS
Information Disclosure
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Identificadores relacionados
Produtos afetados
Alt Linux
Centos
Openssh
Red Hat
Suse