Input validation error in spamassassin (Alpine package)

1) Input validation error

EUVDB-ID: #VU23600

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-2019-12420

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when parsing multipart email messages. A remote attacker can send a specially crafted email message and consume all available resources on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

spamassassin (Alpine package): 3.4.0-r0 - 3.4.2-r5

External links

http://git.alpinelinux.org/aports/commit/?id=3fe10202b17cab6dd2b9eefd7e8e092864a008ab
http://git.alpinelinux.org/aports/commit/?id=414d938b62bf425063a54567a1736a0d2fb76c8f
http://git.alpinelinux.org/aports/commit/?id=920c66f72c3e2cc23d7aed42e9ffa0d3a355494d
http://git.alpinelinux.org/aports/commit/?id=baee0facb0bff1fa120bd6c9b7b0454af79a3f04
http://git.alpinelinux.org/aports/commit/?id=d41a153ca51fae77177652bcf56edc463802bab3

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.