Vulnerability Monitor

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CVE-2020-11761

An issue was discovered in OpenEXR before 2.4.1. There is an out-of-bounds read during Huffman uncompression, as demonstrated by FastHufDecoder::refill in ImfFastHuf.cpp.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.5, requiring local system access to exploit with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 11 products from openexr, from fedoraproject, from canonical and 8 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-04-14T23:15:12.327

Last Modified

2024-11-21T04:58:33.050

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-125

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	openexr	openexr	< 2.4.1	Yes
Operating System	fedoraproject	fedora	32	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes
Operating System	canonical	ubuntu_linux	19.10	Yes
Operating System	canonical	ubuntu_linux	20.04	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Application	apple	icloud	< 7.20	Yes
Application	apple	icloud	< 11.3	Yes
Application	apple	itunes	< 12.10.8	Yes
Operating System	apple	ipados	< 13.6	Yes
Operating System	apple	iphone_os	< 13.6	Yes
Operating System	apple	mac_os_x	< 10.15.6	Yes
Operating System	apple	mac_os_x	< 10.13.6	Yes
Operating System	apple	mac_os_x	< 10.14.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.13.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	mac_os_x	10.14.6	Yes
Operating System	apple	tvos	< 13.4.8	Yes
Operating System	apple	watchos	< 6.2.8	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00051.html Mailing List, Third Party Advisory ([email protected])
https://bugs.chromium.org/p/project-zero/issues/detail?id=1987 Exploit, Third Party Advisory ([email protected])
https://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md#version-241-february-11-2020 Release Notes, Third Party Advisory ([email protected])
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.4.1 Release Notes, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2020/08/msg00056.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4KFGDQG5PVYAU7TS5MZ7XCS6EMPVII3/ ([email protected])
https://security.gentoo.org/glsa/202107-27 Third Party Advisory ([email protected])
https://support.apple.com/kb/HT211288 Third Party Advisory ([email protected])
https://support.apple.com/kb/HT211289 Third Party Advisory ([email protected])
https://support.apple.com/kb/HT211290 Third Party Advisory ([email protected])
https://support.apple.com/kb/HT211291 Third Party Advisory ([email protected])
https://support.apple.com/kb/HT211293 Third Party Advisory ([email protected])
https://support.apple.com/kb/HT211294 Third Party Advisory ([email protected])
https://support.apple.com/kb/HT211295 Third Party Advisory ([email protected])
https://usn.ubuntu.com/4339-1/ Third Party Advisory ([email protected])
https://www.debian.org/security/2020/dsa-4755 Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00051.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.chromium.org/p/project-zero/issues/detail?id=1987 Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md#version-241-february-11-2020 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.4.1 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2020/08/msg00056.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4KFGDQG5PVYAU7TS5MZ7XCS6EMPVII3/ (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202107-27 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT211288 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT211289 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT211290 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT211291 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT211293 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT211294 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT211295 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4339-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2020/dsa-4755 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For openexr's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.