CVE-2021-3477: debian debian_linux Integer Overflow or Wraparound
Vulnerability summary
CVE-2021-3477 is a medium (CVSS 5.5) Integer Overflow or Wraparound vulnerability in debian debian_linux. EPSS estimates a 0.96% chance of exploitation in the next 30 days, higher than 61.1% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 7 · Related 4Timeline
- 31-03-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
There's a flaw in OpenEXR's deep tile sample size calculations in versions before 3.0.0-beta. An attacker who is able to submit a crafted file to be processed by OpenEXR could trigger an integer overflow, subsequently leading to an out-of-bounds read. The greatest risk of this flaw is to application availability.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.96%
Chance of exploitation in the next 30 days
Percentile
61%
Versus all other CVEs
30-day change
0.00 pp
From 0.96% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
Affected systems
Debian2 products
- openexr< 2.5.4-1
- debian_linuxEOL9.0 | 10.0
Openexr1 product
- openexr< 2.4.3 | ≥ 2.5.0, < 2.5.4
Ubuntu1 product
- openexr< 2.2.0-10ubuntu2.6 | < 2.2.0-11.1ubuntu1.6 | < 2.3.0-6ubuntu0.5
3 vendors · 4 products
