Buffer overflow in curl.haxx.se cURL

1) Buffer overflow

EUVDB-ID: #VU33022

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-2016-9586

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

curl before version 7.52.0 is vulnerable to a buffer overflow when doing a large floating point output in libcurl's implementation of the printf() functions. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

cURL: 7.1 - 7.51.0

External links

http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
http://www.securityfocus.com/bid/95019
http://www.securitytracker.com/id/1037515
http://access.redhat.com/errata/RHSA-2018:3558
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9586
http://curl.haxx.se/docs/adv_20161221A.html
http://github.com/curl/curl/commit/curl-7_51_0-162-g3ab3c16
http://lists.debian.org/debian-lts-announce/2018/11/msg00005.html
http://security.gentoo.org/glsa/201701-47

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.