cURL < 7.20.0 CURLOPT_ENCODING Option Buffer Overflow

Medium Nessus Network Monitor Plugin ID 5335


The remote host is running a download client that is vulnerable to a buffer overflow attack.


The remote host is running cURL, a download client for various protocols. The installed version of cURL is earlier than 7.20.0. Such versions are potentially affected by a buffer overflow vulnerability when downloading compressed files over HTTP and automatically decompressing the file with the 'CURLOPT_ENCODING' option. This issue only occurs in versions of cURL that are built with zlib enabled.


Upgrade to cURL 7.20.0 or later.

See Also

Plugin Details

Severity: Medium

ID: 5335

Family: Web Clients

Published: 2010/02/10

Modified: 2018/09/16

Dependencies: 1735, 8314

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


Base Score: 5.6

Temporal Score: 4.9


Temporal Vector: CVSS3#E:U/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 2010/02/09

Vulnerability Publication Date: 2010/02/09

Reference Information

BID: 38162