5.9

CVE-2021-33880: oracle communications_cloud_native_core_policy Observable Discrepancy

CVSS: 5.9v3.1MediumModified
AliasesGHSA-8ch4-58qp-g3mpPYSEC-2021-95UBUNTU-CVE-2021-33880
Published 06-06-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-33880 is a medium (CVSS 5.9) Observable Discrepancy vulnerability in oracle communications_cloud_native_core_policy. EPSS estimates a 2.27% chance of exploitation in the next 30 days, higher than 82.7% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.1 (NVD)
EPSS score
2.27%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 06-06-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

The aaugustin websockets library before 9.1 for Python has an Observable Timing Discrepancy on servers when HTTP Basic Authentication is enabled with basic_auth_protocol_factory(credentials=...). An attacker may be able to guess a password via a timing attack.

CVSS metrics

6 scores · 4 sources · 3 versions

EPSS trend

Probability

2.27%

Chance of exploitation in the next 30 days

Percentile

83%

Versus all other CVEs

30-day change

0.00 pp

From 2.27% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.27%

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

Oracle4 products
Debian1 product
  • python-websockets< 9.1-1
PyPI1 product
  • websockets< 547a26b685d08cac0aa64e5e65f7867ac0ea9bc0 | < 9.1
Ubuntu1 product
  • python-websocketsAll versions (No fix recorded)
Websockets_project1 product

5 vendors · 8 products

References

10 links