Input validation error in perl-email-address (Alpine package)

1) Input validation error

EUVDB-ID: #VU33726

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-12558

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The parse() method in the Email::Address module through 1.909 for Perl is vulnerable to Algorithmic complexity on specially prepared input, leading to Denial of Service. Prepared special input that caused this problem contained 30 form-field characters ("f").

Mitigation

Install update from vendor's website.

Vulnerable software versions

perl-email-address (Alpine package): 1.908-r0 - 1.909-r0

External links

http://git.alpinelinux.org/aports/commit/?id=18070a9ba09af91c141de190a77de4d154f310e4
http://git.alpinelinux.org/aports/commit/?id=587d0f6837182b94b1c14fb78949b85ac188c60c
http://git.alpinelinux.org/aports/commit/?id=7def72e88762d07dcb50382ca5266d0f83b38cce
http://git.alpinelinux.org/aports/commit/?id=b38f0359fd243aec3574362ebc61bcb5c7245868

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.