7.5

CVE-2021-28089: fedoraproject fedora Uncontrolled Resource Consumption

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-28089DEBIAN-CVE-2021-28089
Published 19-03-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-28089 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in fedoraproject fedora. EPSS estimates a 1.67% chance of exploitation in the next 30 days, higher than 76.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.67%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 4
DSA-4871-1MGASA-2021-0180OPENSUSE-SU-2021:0461-1OPENSUSE-SU-2021:0474-1OPENSUSE-SU-2024:11469-1USN-5036-1

Timeline

  1. 19-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, aka TROVE-2021-001.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.67%

Chance of exploitation in the next 30 days

Percentile

76%

Versus all other CVEs

30-day change

0.00 pp

From 1.67% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • tor< 0.4.5.7-1
Fedoraproject1 product
Torproject1 product
  • tor< 0.3.5.14 | ≥ 0.4.4.4, < 0.4.4.8 | ≥ 0.4.5.0, < 0.4.5.7 | 0.4.4.0:alpha | 0.4.4.1:alpha | 0.4.4.2:alpha | 0.4.4.3:alpha
Ubuntu1 product
  • tor< 0.2.9.14-1ubuntu1~16.04.3+esm1 | < 0.3.2.10-1ubuntu0.2~esm2 | < 0.4.2.7-1ubuntu0.1~esm1

4 vendors · 4 products

References

10 links