GNU Serveez through 0.2.2 has an Information Leak. An attacker may send an HTTP POST request to the /cgi-bin/reader URI. The attacker must…
mitre·CWE-681·Published 2019-11-20
GNU Serveez through 0.2.2 has an Information Leak. An attacker may send an HTTP POST request to the /cgi-bin/reader URI. The attacker must include a Content-length header with a large positive value that, when represented in 32 bit binary, evaluates to a negative number. The problem exists in the http_cgi_write function under http-cgi.c; however, exploitation might show svz_envblock_add in libserveez/passthrough.c as the location of the heap-based buffer over-read.
GNU Serveez through 0.2.2 has an Information Leak. An attacker may send an HTTP POST request to the /cgi-bin/reader URI. The attacker must include a Content-length header with a large positive value that, when represented in 32 bit binary, evaluates to a negative number. The problem exists in the http_cgi_write function under http-cgi.c; however, exploitation might show svz_envblock_add in libserveez/passthrough.c as the location of the heap-based buffer over-read.
GNU Serveez versiones hasta 0.2.2, tiene un Filtrado de Información. Un atacante puede enviar una petición POST de HTTP en el URI /cgi-bin/reader. El atacante necesita incluir un encabezado Content-length con un valor positivo grande que, cuando se representa en un binario de 32 bits, se evalúa como un número negativo. El problema existe en la función http_cgi_write en el archivo http-cgi.c; sin embargo, la explotación puede mostrar la función svz_envblock_add en el archivo libserveez/passthrough.c como la ubicación de una lectura excesiva del búfer en la región heap de la memoria.
| Version | Type | Source | Base | Exp | Impact | Vector |
|---|---|---|---|---|---|---|
| 2.0 | Primary | NVD | 5.0 | 10.0 | 2.9 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| 3.1 | Primary | NVD | 7.5 | 3.9 | 3.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |