Improper Initialization in curl.haxx.se cURL



Published: 2018-04-23 | Updated: 2020-07-17
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-9594
CWE-ID CWE-665
Exploitation vector Network
Public exploit N/A
Vulnerable software
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cURL
Client/Desktop applications / Other client software

Vendor curl.haxx.se

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper Initialization

EUVDB-ID: #VU31318

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-9594

CWE-ID: CWE-665 - Improper Initialization

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

curl before version 7.52.1 is vulnerable to an uninitialized random in libcurl's internal function that returns a good 32bit random value. Having a weak or virtually non-existent random value makes the operations that use it vulnerable.

Mitigation

Install update from vendor's website.

Vulnerable software versions

cURL: 7.52.0

External links

http://www.securityfocus.com/bid/95094
http://www.securitytracker.com/id/1037528
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9594
http://curl.haxx.se/docs/adv_20161223.html
http://security.gentoo.org/glsa/201701-47
http://www.tenable.com/security/tns-2017-04


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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