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Debian Security Advisory 4613-1

Debian Security Advisory 4613-1
Posted Feb 3, 2020
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4613-1 - 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.

tags | advisory, denial of service, overflow, arbitrary
systems | linux, debian
advisories | CVE-2019-18224
MD5 | bc4ea9e149abcc89a200608b389eeeca

Debian Security Advisory 4613-1

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Hash: SHA512

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4613-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
February 01, 2020 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : libidn2
CVE ID : CVE-2019-18224
Debian Bug : 942895

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.

For the stable distribution (buster), this problem has been fixed in
version 2.0.5-1+deb10u1.

We recommend that you upgrade your libidn2 packages.

For the detailed security status of libidn2 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/libidn2

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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