Buffer overflow in curl.haxx.se cURL

1) Buffer overflow

EUVDB-ID: #VU33022

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

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

CPE2.3

• cpe:2.3:a:curl_haxx_se:curl:7.1:*:*:*:*:*:*:*
• cpe:2.3:a:curl_haxx_se:curl:7.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:curl_haxx_se:curl:7.2:*:*:*:*:*:*:*

External links

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