nginx < 1.0.10 DNS Resolver Remote Heap Buffer Overflow

medium Nessus Network Monitor Plugin ID 6456


The remote web server is affected by a buffer-overflow vulnerability.


The remote host is running a nginx HTTP server.

Versions earlier than 1.0.10 are vulnerable to a remote heap-based buffer-overflow vulnerability due to a failure to properly bounds check user-supplied input to the DNS resolver. The issue occurs specifically when the DNS resolver processes messages more than 255 bytes. Successfully exploiting this issue allows attackers to execute arbitrary code in the context of the application. (CVE-2011-4314)


Upgrade to nginx 1.0.10 or later.

See Also

Plugin Details

Severity: Medium

ID: 6456

Family: Web Servers

Published: 4/17/2012

Updated: 3/6/2019

Nessus ID: 58413

Risk Information


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:a:igor_sysoev:nginx:*:*:*:*:*:*:*:*

Patch Publication Date: 11/9/2011

Vulnerability Publication Date: 11/17/2011

Reference Information

CVE: CVE-2011-4315

BID: 50710