PT-2004-2354 · Simon Tatham · Putty
Publicado
2004-12-31
·
Atualizado
2017-07-11
·
CVE-2004-1440
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:
PuTTY versions prior to 0.55
Description:
The issue is related to multiple heap-based buffer overflows in the modpow function. This allows remote attackers to execute arbitrary code via an SSH2 packet with a base argument that is larger than the mod argument, causing the modpow function to write memory before the beginning of its buffer. Additionally, remote malicious servers can cause a denial of service (client crash) and possibly execute arbitrary code via a large bignum during authentication.
Recommendations:
For versions prior to 0.55, update to version 0.55 or later to resolve the issue. As a temporary workaround, consider restricting access to SSH2 packets with large base arguments to minimize the risk of exploitation.
Correção
Encontrou algum problema na descrição? Tem algo a acrescentar? Fique à vontade para nos escrever 👾
Identificadores relacionados
Produtos afetados
Putty