// For flags

CVE-2021-20299

openSUSE Security Advisory - openSUSE-SU-2021:2793-1

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se ha encontrado un fallo en la funcionalidad Multipart input file de OpenEXR. Un archivo de entrada multiparte diseñado sin partes reales puede desencadenar una desreferencia de puntero NULL. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema

An update that fixes 7 vulnerabilities is now available. This update for openexr fixes the following issues. Fixed Out-of-memory in B44Compressor. Fixed Null-dereference READ in Imf_2_5:Header:operator. Fixed Integer-overflow in Imf_2_5:hufUncompress. Fixed Floating-point-exception in Imf_2_5:precalculateTileInfot. Fixed Heap-buffer-overflow in Imf_2_5::copyIntoFrameBuffer. Fixed Undefined-shift in Imf_2_5:hufDecode.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-17 CVE Reserved
  • 2021-08-20 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-08-04 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-476: NULL Pointer Dereference
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Openexr
Search vendor "Openexr"
 Openexr
Search vendor "Openexr" for product "Openexr"
 < 2.5.4
Search vendor "Openexr" for product "Openexr" and version " < 2.5.4"
-
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