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CVE-2020-27824

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Date: May 13, 2021

A flaw was found in OpenJPEG’s encoder in the opj_dwt_calc_explicit_stepsizes() function. This flaw allows an attacker who can supply crafted input to decomposition levels to cause a buffer overflow. The highest threat from this vulnerability is to system availability.

Language: C

Severity Score

Related Resources (15)

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/
https://access.redhat.com/security/cve/CVE-2020-27824
https://nvd.nist.gov/vuln/detail/CVE-2020-27824
https://www.debian.org/security/2021/dsa-4882
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OQR4EWRFFZQDMFPZKFZ6I3USLMW6TKTP/
https://bugzilla.redhat.com/show_bug.cgi?id=1905723
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-27824
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/
https://security.alpinelinux.org/vuln/CVE-2020-27824
https://github.com/uclouvain/openjpeg/commit/6daf5f3e1ec6eff03b7982889874a3de6617db8d
https://security-tracker.debian.org/tracker/CVE-2020-27824
https://lists.debian.org/debian-lts-announce/2021/02/msg00011.html
https://www.oracle.com/security-alerts/cpuoct2021.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQR4EWRFFZQDMFPZKFZ6I3USLMW6TKTP/
https://www.mend.io/vulnerability-database/CVE-2020-27824

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Out-of-bounds Read

CWE-125

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-120

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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