CVE-2019-18224

medium

Published 2019-11-05 · Modified 2019-11-05

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

—

CVSS v4 NEW

—

not yet in upstream

VIR risk

5.5

Description

RHBA-2019:3621: libidn2 bug fix and enhancement update (Moderate)

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Red Hat Errata — Red Hat Inc. · View original ↗ · Open-Errata-API

Description libidn2: heap-based buffer overflow in idn2_to_ascii_4i in lib/lookup.c CVSS v3: 5.6 (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L) Errata / fixed releases ProductPackageAdvisoryReleased Red Hat Enterprise Linux 8libidn2-0:2.2.0-1.el8RHBA-2019:36212019-11-05T00:00:00Z Red Hat Enterprise Linux 8libidn2-0:2.2.0-1.el8RHBA-2019:36212019-11-05T00:00:00Z

Description

libidn2: heap-based buffer overflow in idn2_to_ascii_4i in lib/lookup.c

CVSS v3: 5.6 (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L)

Errata / fixed releases

Product	Package	Advisory	Released
Red Hat Enterprise Linux 8	`libidn2-0:2.2.0-1.el8`	RHBA-2019:3621	2019-11-05T00:00:00Z
Red Hat Enterprise Linux 8	`libidn2-0:2.2.0-1.el8`	RHBA-2019:3621	2019-11-05T00:00:00Z

Apply commands

bash fix

Apply RHBA-2019:3621 for Red Hat Enterprise Linux 8

yum update -y libidn2
# or:
dnf upgrade -y libidn2

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`2.2.0-1`
debian	bullseye	fixed	`2.2.0-1`
debian	forky	fixed	`2.2.0-1`
debian	sid	fixed	`2.2.0-1`
debian	trixie	fixed	`2.2.0-1`
rocky	8	fixed
rhel	8	fixed

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.