Vulnerability · Published Apr 1, 2021 · Assigned by redhat
CVE-2021-20296
Medium 5.3
In plain English
A medium-severity null pointer dereference in OpenEXR. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)1.7%top 22.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A flaw was found in OpenEXR in versions before 3.0.0-beta. A crafted input file supplied by an attacker, that is processed by the Dwa decompression functionality of OpenEXR's IlmImf library, could cause a NULL pointer dereference. The highest threat from this vulnerability is to system availability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | openexr | 2.5.4-r0 | ALPINE-CVE-2021-20296 |
| Alpine:v3.21 | openexr | 2.5.4-r0 | ALPINE-CVE-2021-20296 |
| Alpine:v3.22 | openexr | 2.5.4-r0 | ALPINE-CVE-2021-20296 |
| Alpine:v3.23 | openexr | 2.5.4-r0 | ALPINE-CVE-2021-20296 |
| Alpine:v3.24 | openexr | 2.5.4-r0 | ALPINE-CVE-2021-20296 |
| Debian:12 | openexr | 2.5.4-1 | DEBIAN-CVE-2021-20296 |
| Debian:13 | openexr | 2.5.4-1 | DEBIAN-CVE-2021-20296 |
| Debian:14 | openexr | 2.5.4-1 | DEBIAN-CVE-2021-20296 |
Affected products (as reported)
Weakness: CWE-476
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1939141
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24854
- [debian-lts-announce] 20210703 [SECURITY] [DLA 2701-1] openexr security update mailing-list
- GLSA-202107-27 vendor-advisory
- [debian-lts-announce] 20221211 [SECURITY] [DLA 3236-1] openexr security update mailing-list