Buffer overflow in curl (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU9458

Risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-8816

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to buffer overflow in the NTLM authentication process. A remote unauthenticated attacker can use vectors involving long user and password fields, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

curl (Alpine package): 7.55.0-r2 - 7.56.1-r1

CPE2.3

• cpe:2.3:o:alpine:curl_alpine_package:7.56.1-r1:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:curl_alpine_package:7.56.1-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:curl_alpine_package:7.56.0-r0:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=06d873c35d45649783f1d3393b35034356679424
http://git.alpinelinux.org/aports/commit/?id=c06e486361bfb260c36b661c47d03ff912df9539
http://git.alpinelinux.org/aports/commit/?id=8cd99339489d34b85f1c9f7196bc0a73cda7bde0
http://git.alpinelinux.org/aports/commit/?id=ae95dcd40f4dd84b6c6cc8c7b1f7dccc38bc103e
http://git.alpinelinux.org/aports/commit/?id=be39a8b5346d43f34446441548dc6edd585cb297

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.