Out-of-bounds write in webkit2gtk (Alpine package)



Published: 2018-09-27
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-12911
CWE-ID CWE-787
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		webkit2gtk (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Out-of-bounds write

EUVDB-ID: #VU15546

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-2018-12911

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code with elevated privileges.

The weakness exists due to an off-by-one error in the get_simple_globs functions in ThirdParty/xdgmime/src/xdgmimecache.c and ThirdParty/xdgmime/src/xdgmimeglob.c. A remote attacker can trigger out-of-bounds write and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install update from vendor's website.

Vulnerable software versions

webkit2gtk (Alpine package): 2.20.3-r0

CPE2.3 External links

http://git.alpinelinux.org/aports/commit/?id=0af1cbfdb6065fca513ef4d282a2c794faba6c18


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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