PT-2019-2933 · Znc+2 · Znc+2

Jeriko One · Published 2019-06-12 · Updated 2024-06-15 · CVE-2019-12816

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions ZNC versions prior to 1.7.4-rc1

Description The issue is related to insufficient privilege control in the LoadModule, GetModInfo, and GetModPathInfo functions from src/Modules.cpp, which are part of the mechanism for disconnecting clients from an IRC server or a selected ZNC channel. This can be exploited by a remote attacker to elevate privileges and execute arbitrary code by loading a module with a specially crafted user name.

Recommendations For versions prior to 1.7.4-rc1, update to version 1.7.4-rc1 or later to resolve the issue. As a temporary workaround, consider restricting access to the LoadModule function to prevent non-admin users from loading modules until a patch is applied.

Fix

RCE

Weakness Enumeration

CWE-20

CWE-264

Related Identifiers

BDU:2019-02908

CVE-2019-12816

DLA-1830-1

DSA-4463-1

MGASA-2019-0262

OPENSUSE-SU-2019:1775-1

OPENSUSE-SU-2019:1859-1

OPENSUSE-SU-2019_1775-1

OPENSUSE-SU-2024:11542-1

USN-4044-1

Affected Products

Suse

Ubuntu

Znc

References · 42

• https://github.com/znc/znc/compare/be1b6bc...d1997d6 · Patch
• https://github.com/znc/znc/commit/8de9e376ce531fe7f3c8b0aa4876d15b479b7311 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-12816 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-12816 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2019-12816 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-12816 · Security Note
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00037.html · Vendor Advisory
• https://usn.ubuntu.com/4044-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-12816 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4463-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0262 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11542-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-12816 · Vendor Advisory
• https://security.gentoo.org/glsa/201908-15 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:1859-1 · Vendor Advisory