CVE-2021-20718: fedoraproject fedora Uncontrolled Resource Consumption
CVSS: 7.5v3.1HighModified
AliasesMGASA-2021-0280SUSE-SU-2021:1900-1UBUNTU-CVE-2021-20718DEBIAN-CVE-2021-20718
Published 20-05-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-20718 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in fedoraproject fedora. EPSS estimates a 3.40% chance of exploitation in the next 30 days, higher than 88.6% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
3.40%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 20-05-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
mod_auth_openidc 2.4.0 to 2.4.7 allows a remote attacker to cause a denial-of-service (DoS) condition via unspecified vectors.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
3.40%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
0.00 pp
From 3.40% on 18-09-2026
18-09-202618-10-2026
EPSS score3.40%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse6 products
- apache2-mod_auth_openidc&distro=SUSE Linux Enterprise Server 12 SP4-LTSS< 2.4.0-3.14.1
- apache2-mod_auth_openidc&distro=SUSE Linux Enterprise Server 12 SP5< 2.4.0-3.14.1
- apache2-mod_auth_openidc&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP4< 2.4.0-3.14.1
- apache2-mod_auth_openidc&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 2.4.0-3.14.1
- apache2-mod_auth_openidc&distro=SUSE OpenStack Cloud 9< 2.4.0-3.14.1
Debian1 product
- libapache2-mod-auth-openidc< 2.4.4.1-2
Fedoraproject1 product
- fedoraEOL33 | 34
Mageia1 product
- apache-mod_auth_openidc< 2.4.2.1-1.1.mga8
Openidc1 product
- mod_auth_openidc≥ 2.4.0, ≤ 2.4.7
Oracle1 product
- essbase< 21.3
Ubuntu1 product
- libapache2-mod-auth-openidcAll versions (No fix recorded)
Zmartzone1 product
- mod_auth_openidc2.4.0 to 2.4.7
8 vendors · 13 products
