CVE-2020-27824: debian debian_linux Improper Input Validation
Vulnerability summary
CVE-2020-27824 is a medium (CVSS 5.5) Improper Input Validation vulnerability in debian debian_linux. EPSS estimates a 1.61% chance of exploitation in the next 30 days, higher than 75.9% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 12 · Related 8Timeline
- 13-05-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in OpenJPEG’s encoder in the opj_dwt_calc_explicit_stepsizes() function. This flaw allows an attacker who can supply crafted input to decomposition levels to cause a buffer overflow. The highest threat from this vulnerability is to system availability.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- 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
1.61%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.61% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
Affected systems
Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu7 products
- blenderAll versions (No fix recorded)
- ghostscript< 9.26~dfsg+0-0ubuntu0.16.04.14 | < 9.26~dfsg+0-0ubuntu0.18.04.14
- insighttoolkit4All versions (No fix recorded)
- openjpegAll versions (No fix recorded) | < 1:1.5.2-3.1ubuntu0.1~esm2
- openjpeg2< 2.1.2-1.1+deb9u6build0.16.04.1 | < 2.3.0-2+deb10u2build0.18.04.1 | < 2.3.1-1ubuntu4.20.04.1 | < 2.3.1-1ubuntu5
Debian2 products
- openjpeg2< 2.4.0-1
- debian_linuxEOL9.0 | 10.0
Alpine1 product
- openjpeg< 2.3.1-r5 | < 2.3.1-r6
Fedoraproject1 product
- fedoraEOL32 | 33
Redhat1 product
Uclouvain1 product
- openjpeg< 2.4.0
6 vendors · 13 products
References
16 links
lists.debian.org/debian-lts-announce/2021/02/msg00011.htmlMailing ListX Refsource MLISTThird Party Advisory
