Debian: Security Advisory for libidn2 (DSA-4613-1)

Published: 2020-02-02 04:00:14
CVE Author: NIST National Vulnerability Database (NVD)

CVSS Base Vector:

The remote host is missing an update for the 'libidn2' Linux Distribution Package(s) announced via the DSA-4613-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
A heap-based buffer overflow vulnerability was discovered in the idn2_to_ascii_4i() function in libidn2, the GNU library for Internationalized Domain Names (IDNs), which could result in denial of service, or the execution of arbitrary code when processing a long domain string.

Affected Versions:
'libidn2' Linux Distribution Package(s) on Debian Linux.

For the stable distribution (buster), this problem has been fixed in version 2.0.5-1+deb10u1. We recommend that you upgrade your libidn2 Linux Distribution Packages.

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)


CVSS Score

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