PT-2019-2934 · Znc+2 · Znc+2

Darthgandalf · Published 2019-03-27 · Updated 2024-06-15 · CVE-2019-9917

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions ZNC versions prior to 1.7.3-rc1

Description The issue allows an existing remote user to cause a Denial of Service (crash) via invalid encoding. It is due to insufficient input validation in the mechanism for disconnecting clients from the IRC server or a selected channel. This can be exploited by a remote attacker to cause a denial of service.

Recommendations For versions prior to 1.7.3-rc1, update to version 1.7.3-rc1 or later to resolve the issue. As a temporary workaround, consider restricting access to the ZNC service to minimize the risk of exploitation.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2019-02909

CVE-2019-9917

DSA-4463-1

MGASA-2019-0262

OPENSUSE-SU-2019:1166-1

OPENSUSE-SU-2019:1775-1

OPENSUSE-SU-2019:1859-1

OPENSUSE-SU-2019_1166-1

OPENSUSE-SU-2019_1775-1

OPENSUSE-SU-2024:11542-1

USN-3950-1

Affected Products

Suse

Ubuntu

Znc

References · 39

• https://github.com/znc/znc/commit/64613bc8b6b4adf1e32231f9844d99cd512b8973 · Patch
• https://advisories.mageia.org/MGASA-2019-0262.html · Security Note
• https://usn.ubuntu.com/3950-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2019-9917 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-9917 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-9917 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2019-9917 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZRVSINQHM623GJYYNDSBYSXT2MHKFCYQ · Vendor Advisory
• https://debian.org/security/2019/dsa-4463 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-9917 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00037.html · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:1166-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-02909 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2019:1859-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:1775-1 · Vendor Advisory