Debian update for zeromq3

1) Integer overflow

EUVDB-ID: #VU17108

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-6250

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in a v2_decoder.cpp zmq::v2_decoder_t::size_ready. A remote authenticated attacker can overwrite an arbitrary amount of bytes beyond the bounds of a buffer and inject OS commands into a data structure located immediately after the problematic buffer to execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package to version: 4.2.1-4+deb9u1

Vulnerable software versions

zeromq3 (Debian package): 4.2.0-1 - 4.2.1-4

CPE2.3

• cpe:2.3:a:debian:zeromq3_debian_package:4.2.0-1:*:*:*:*:debian_linux:*:*
• cpe:2.3:a:debian:zeromq3_debian_package:4.2.0-2:*:*:*:*:debian_linux:*:*
• cpe:2.3:a:debian:zeromq3_debian_package:4.2.1-1:*:*:*:*:debian_linux:*:*

External links

https://www.debian.org/security/2019/dsa-4368

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, proof of concept for this vulnerability is available.