Is CVE-2019-12290 in the CISA KEV catalog?

No. CVE-2019-12290 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-12290?

CVE-2019-12290 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-12290?

CVE-2019-12290 has an EPSS score of 2.79% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-12290?

Upgrade libidn2 on debian 11 to 2.2.0-1 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2019-12290

HIGHEPSS 85th pctl

7.5

CVSS v3

NVD

Description

GNU libidn2 before 2.2.0 fails to perform the roundtrip checks specified in RFC3490 Section 4.2 when converting A-labels to U-labels. This makes it possible in some circumstances for one domain to impersonate another. By creating a malicious domain that matches a target domain except for the inclusion of certain punycoded Unicode characters (that would be discarded when converted first to a Unicode label and then back to an ASCII label), arbitrary domains can be impersonated.

CWE-20Improper Input Validation

How to fix

Remediation Available

libidn2Debian

Fixed in:2.2.0-1CVE-2019-12290

idn2Ubuntu

Fixed in:2.0.4-1.1ubuntu0.2USN-4168-1

libidn2Ubuntu

Fixed in:2.0.4-1.1ubuntu0.2USN-4168-1

libidn2-0Ubuntu

Fixed in:2.0.4-1.1ubuntu0.2USN-4168-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

2.79%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch2

Third-Party Advisory1

gitlab.com

Other references9

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.