Is CVE-2020-27823 in the CISA KEV catalog?

No. CVE-2020-27823 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-27823?

CVE-2020-27823 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2020-27823?

CVE-2020-27823 has an EPSS score of 1.11% (62th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-27823?

Upgrade openjpeg2 on debian 11 to 2.4.0-1 or later. Fixes are available for 5 affected products.

CVE & CISA-KEV Catalog

CVE-2020-27823

HIGH

7.8

CVSS v3

NVD

Description

A flaw was found in OpenJPEG’s encoder. This flaw allows an attacker to pass specially crafted x,y offset input to OpenJPEG to use during encoding. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CWE-20Improper Input Validation CWE-120Classic Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

openjpeg2Debian

Fixed in:2.4.0-1CVE-2020-27823

libopenjp2-7Ubuntu

Fixed in:2.1.2-1.1+deb9u6build0.16.04.1USN-4880-1

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm3USN-5952-1

Fixed in:2.3.0-2+deb10u2build0.18.04.1USN-5952-1

Fixed in:2.3.1-1ubuntu4.20.04.1USN-4685-1

libopenjp3d7Ubuntu

Fixed in:2.1.2-1.1+deb9u6build0.16.04.1USN-4880-1

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm3USN-5952-1

Fixed in:2.3.0-2+deb10u2build0.18.04.1USN-5952-1

Fixed in:2.3.1-1ubuntu4.20.04.1USN-4685-1

libopenjpip7Ubuntu

Fixed in:2.1.2-1.1+deb9u6build0.16.04.1USN-4880-1

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm3USN-5952-1

Fixed in:2.3.0-2+deb10u2build0.18.04.1USN-5952-1

Fixed in:2.3.1-1ubuntu4.20.04.1USN-4685-1

openjpeg2Ubuntu

Fixed in:2.1.2-1.1+deb9u6build0.16.04.1USN-4880-1

Fixed in:2.1.2-1.1+deb9u6ubuntu0.1~esm3USN-5952-1

Fixed in:2.3.0-2+deb10u2build0.18.04.1USN-5952-1

Fixed in:2.3.1-1ubuntu4.20.04.1USN-4685-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.11%probability of exploitation in 30 days

62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

Patch1

bugzilla.redhat.com

Third-Party Advisory2

Other references2

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.