Information disclosure in Debian openssh package

1) Information disclosure

EUVDB-ID: #VU14548

Risk: Low

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2018-15919

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to insufficient validation of an authentication request packet when the Guide Star Server II (GSS2) component is used. A remote attacker can send an authentication request packet and access sensitive information, such as valid usernames.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

openssh (Debian package): 1:6.7p1-1 - 1:7.9p1-4

External links

http://security-tracker.debian.org/tracker/CVE-2018-15919

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.