Medium severity · published May 13, 2021
CVE-2020-27824
A flaw was found in OpenJPEG’s encoder in the opj_dwt_calc_explicit_stepsizes() function
5.5
CVSS
1.6%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.6% · higher than 76% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
FE
Fedora · Fedoraproject
32; 33 · source: NVD
OP
Openjpeg · Uclouvain
before 2.4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27824
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27824
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1905723
Mailing List
https://lists.debian.org/debian-lts-announce/2021/02/msg00011.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQR4EWRFFZQDMFPZKFZ6I3USLMW6TKTP/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/
Third Party Advisory
https://www.debian.org/security/2021/dsa-4882
Patch
https://www.oracle.com/security-alerts/cpuoct2021.html
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