Is CVE-2019-20421 in the CISA KEV catalog?

No. CVE-2019-20421 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-20421?

CVE-2019-20421 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-20421?

CVE-2019-20421 has an EPSS score of 4.30% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-20421?

Upgrade exiv2 on debian 11 to 0.27.2-8 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2019-20421

HIGHEPSS 90th pctl

7.5

CVSS v3

NVD

Description

In Jp2Image::readMetadata() in jp2image.cpp in Exiv2 0.27.2, an input file can result in an infinite loop and hang, with high CPU consumption. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file.

CWE-835

How to fix

Remediation Available

exiv2Debian

Fixed in:0.27.2-8CVE-2019-20421

exiv2Ubuntu

Fixed in:0.25-2.1ubuntu16.04.6USN-4270-1

Fixed in:0.25-3.1ubuntu0.18.04.5USN-4270-1

libexiv2-14Ubuntu

Fixed in:0.25-2.1ubuntu16.04.6USN-4270-1

Fixed in:0.25-3.1ubuntu0.18.04.5USN-4270-1

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

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

4.30%probability of exploitation in 30 days

90thpercentile

Elevated risk: more likely to be exploited than 90% of all known CVEs.

References

Patch2

Third-Party Advisory3

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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.