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

1) Out-of-bounds read

EUVDB-ID: #VU29268

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2008-3962

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the from_format() function in ssmtp.c in sSMTP. A remote attacker can send an email with specially crafted From: field and read memory contents on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ssmtp (Alpine package): 2.62-r0

CPE2.3

• cpe:2.3:o:alpine:ssmtp_alpine_package:2.62-r0:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=825163e06e2d0c82a9bf2e0255cfee66790ac178
http://git.alpinelinux.org/aports/commit/?id=25ced1665ab164cc46466da5a7e326e5e8c70197

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.