CVE-2021-22879: fedoraproject fedora Resource Injection
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2021-22879DEBIAN-CVE-2021-22879openSUSE-SU-2021:0577-1
Published 14-04-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-22879 is a high (CVSS 8.8) Resource Injection vulnerability in fedoraproject fedora. EPSS estimates a 5.04% chance of exploitation in the next 30 days, higher than 92.1% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
8.8/10
010
High · v3.1 (NVD)EPSS score
5.04%
0%100%
Low · +0.34 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 14-04-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Nextcloud Desktop Client prior to 3.1.3 is vulnerable to resource injection by way of missing validation of URLs, allowing a malicious server to execute remote commands. User interaction is needed for exploitation.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 8.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
5.04%
Chance of exploitation in the next 30 days
Percentile
92%
Versus all other CVEs
30-day change
+0.34 pp
From 4.70% on 18-09-2026
18-09-202618-10-2026
EPSS score5.04%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (hackerone.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-99Improper Control of Resource Identifiers ('Resource Injection')The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control.
- CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Affected systems
Debian1 product
- nextcloud-desktop< 3.1.1-2
Fedoraproject1 product
- fedoraEOL33
Nextcloud1 product
- desktop< 3.1.3
Opensuse1 product
- nextcloud-desktop&distro=openSUSE Leap 15.2< 3.1.3-lp152.2.6.1
Ubuntu1 product
- nextcloud-desktopAll versions (No fix recorded)
5 vendors · 5 products
References
11 links
- lists.opensuse.org/archives/…Advisory