7.5
HIGH
CVE-2021-20299
OpenEXR NULL Pointer Dereference
Description

A flaw was found in OpenEXR's Multipart input file functionality. A crafted multi-part input file with no actual parts can trigger a NULL pointer dereference. The highest threat from this vulnerability is to system availability.

INFO

Published Date :

March 16, 2022, 3:15 p.m.

Last Modified :

Nov. 21, 2024, 5:46 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-20299 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Openexr openexr
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-20299.

URL Resource
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25740 Mailing List Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1939154 Issue Tracking Patch Third Party Advisory
https://github.com/AcademySoftwareFoundation/openexr/commit/25e9515b06a6bc293d871622b8cafaee7af84e0f Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html Mailing List Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25740 Mailing List Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1939154 Issue Tracking Patch Third Party Advisory
https://github.com/AcademySoftwareFoundation/openexr/commit/25e9515b06a6bc293d871622b8cafaee7af84e0f Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html Mailing List Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-20299 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20299 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25740
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1939154
    Added Reference https://github.com/AcademySoftwareFoundation/openexr/commit/25e9515b06a6bc293d871622b8cafaee7af84e0f
    Added Reference https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Dec. 13, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Dec. 12, 2022

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2022/12/msg00022.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Mar. 22, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25740 No Types Assigned https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25740 Mailing List, Patch, Third Party Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1939154 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1939154 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://github.com/AcademySoftwareFoundation/openexr/commit/25e9515b06a6bc293d871622b8cafaee7af84e0f No Types Assigned https://github.com/AcademySoftwareFoundation/openexr/commit/25e9515b06a6bc293d871622b8cafaee7af84e0f Patch, Third Party Advisory
    Added CWE NIST CWE-476
    Added CPE Configuration OR *cpe:2.3:a:openexr:openexr:*:*:*:*:*:*:*:* versions up to (excluding) 2.5.4
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-20299 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-20299 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.34 }} 0.12%

score

0.70992

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability