CVE-2019-18224

medium

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

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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

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`2.2.0-1`
sid	Fixed	`2.2.0-1`
forky	Fixed	`2.2.0-1`
bullseye	Fixed	`2.2.0-1`
bookworm	Fixed	`2.2.0-1`

Red Hat Fixed 1 release

Version	Status	Fixed in
8	Fixed	—

Rocky Linux Fixed 1 release

Version	Status	Fixed in
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.