Memory corruption in webkit2gtk (Alpine package)

1) Memory corruption

EUVDB-ID: #VU9668

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-13856

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 weakness exists due to boundary error when handling malicious input. A remote attacker can trick the victim into loading a specially crafted web content, trigger memory corruption in the WebKit component 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

webkit2gtk (Alpine package): 2.18.3-r0

CPE2.3

• cpe:2.3:o:alpine:webkit2gtk_alpine_package:2.18.3-r0:*:*:*:*:alpine_linux:*:3.6

External links

https://git.alpinelinux.org/aports/commit/?id=ccc2f318230304c6b8f9e6c8bafd85ad60077c32
https://git.alpinelinux.org/aports/commit/?id=9333b6b69da075f380935e8a636fb1cd817bf74d
https://git.alpinelinux.org/aports/commit/?id=07f89546be5e1238d496d97d7cb453cc5c7a1e01
https://git.alpinelinux.org/aports/commit/?id=492988e0eece238d11f6dcec62a58c52b2740196

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.