Out-of-bounds read in dovecot (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU10838

Risk: Medium

CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-14461

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to obtain potentially sensitive information or cause DoS condition on the target system.

The weakness exists due to improper parsing of crafted email messages. A remote attacker can send a specially crafted email message over SMTP, trick the victim into opening it, trigger an out-of-bounds read and gain access to potentially sensitive information or cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

dovecot (Alpine package): 2.2.33.2-r4

CPE2.3

• cpe:2.3:o:alpine:dovecot_alpine_package:2.2.33.2-r4:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=5725c3c222d375b3272cdc3c99476cc274e0ddc9
http://git.alpinelinux.org/aports/commit/?id=c98b313e7d98a22a3dd4c5c2e7f5bfe2d2415977
http://git.alpinelinux.org/aports/commit/?id=2e4b8b5d4343b5c1b09013d891c93e717041f324
http://git.alpinelinux.org/aports/commit/?id=44ec7e4406170dec0bcab3fc699115efa72fb094

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.