CVE-2020-27843

openjpeg: out-of-bounds read in opj_t2_encode_packet function in openjp2/t2.c

Severity Score

5.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in OpenJPEG in versions prior to 2.4.0. This flaw allows an attacker to provide specially crafted input to the conversion or encoding functionality, causing an out-of-bounds read. The highest threat from this vulnerability is system availability.

Se encontró un fallo en OpenJPEG en versiones anteriores a 2.4.0. Este fallo permite a un atacante proporcionar una entrada especialmente diseñada para la funcionalidad conversion o encoding, causando una lectura fuera de límites. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema

A flaw was found in OpenJPEG. This flaw allows an attacker to provide specially crafted input to the conversion or encoding functionality, causing an out-of-bounds read. The highest threat from this vulnerability is system availability.

OpenJPEG is an open source library for reading and writing image files in JPEG2000 format. Issues addressed include buffer overflow, code execution, denial of service, double free, integer overflow, null pointer, out of bounds read, out of bounds write, and use-after-free vulnerabilities.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-10-27 CVE Reserved
2021-01-05 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (8)

URL	Tag	Source
https://lists.debian.org/debian-lts-announce/2022/04/msg00006.html	Mailing List

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com//security-alerts/cpujul2021.html	2023-11-07
https://www.oracle.com/security-alerts/cpuApr2021.html	2023-11-07

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1907516	2021-11-09
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV	2023-11-07
https://security.gentoo.org/glsa/202101-29	2023-11-07
https://www.debian.org/security/2021/dsa-4882	2023-11-07
https://access.redhat.com/security/cve/CVE-2020-27843	2021-11-09

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Uclouvain Search vendor "Uclouvain"		Openjpeg Search vendor "Uclouvain" for product "Openjpeg"				< 2.4.0 Search vendor "Uclouvain" for product "Openjpeg" and version " < 2.4.0"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				32 Search vendor "Fedoraproject" for product "Fedora" and version "32"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				33 Search vendor "Fedoraproject" for product "Fedora" and version "33"		-		Affected
Oracle Search vendor "Oracle"		Outside In Technology Search vendor "Oracle" for product "Outside In Technology"				8.5.5 Search vendor "Oracle" for product "Outside In Technology" and version "8.5.5"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected