Ubuntu update for UW IMAP

1) Command injection

EUVDB-ID: #VU16067

Risk: Low

CVSSv3.1: 8.2 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2018-19518

CWE-ID: CWE-77 - Command injection

Exploit availability: Yes

Description

The vulnerability allows a remote authenticated attacker to execute arbitrary commands on the target system.

The weakness exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted data to inject and execute arbitrary commands.

Mitigation

Update the affected packages.

Ubuntu 19.04

libc-client2007e - 8:2007f~dfsg-5ubuntu0.19.04.2

mlock - 8:2007f~dfsg-5ubuntu0.19.04.2

uw-mailutils - 8:2007f~dfsg-5ubuntu0.19.04.2

Ubuntu 18.04 LTS

libc-client2007e - 8:2007f~dfsg-5ubuntu0.18.04.2

mlock - 8:2007f~dfsg-5ubuntu0.18.04.2

uw-mailutils - 8:2007f~dfsg-5ubuntu0.18.04.2

Ubuntu 16.04 LTS

libc-client2007e - 8:2007f~dfsg-4+deb8u1build0.16.04.1

mlock - 8:2007f~dfsg-4+deb8u1build0.16.04.1

uw-mailutils - 8:2007f~dfsg-4+deb8u1build0.16.04.1

Vulnerable software versions

uw-imap (Ubuntu package): 8:2007f~dfsg-5ubuntu0.18.04.1 - 8:2007f~dfsg-5ubuntu0.19.04.1

External links

http://usn.ubuntu.com/4160-1/

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. However, a fully functional exploit for this vulnerability is available.