7.5

CVE-2015-7764: netflix lemur Insufficient Entropy

CVSS: 7.5v3.1HighModified
AliasesGHSA-chg9-3c3p-ch23PYSEC-2017-50CGA-3925-4mqr-cpv8
Published 09-08-2017Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-7764 is a high (CVSS 7.5) Insufficient Entropy vulnerability in netflix lemur. EPSS estimates a 1.51% chance of exploitation in the next 30 days, higher than 74% 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
1.51%
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 0 · Related 1
CGA-4MMM-QFRH-X35J

Timeline

  1. 09-08-2017
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Lemur 0.1.4 does not use sufficient entropy in its IV when encrypting AES in CBC mode.

CVSS metrics

6 scores · 3 sources · 3 versions

EPSS trend

Probability

1.51%

Chance of exploitation in the next 30 days

Percentile

74%

Versus all other CVEs

30-day change

0.00 pp

From 1.51% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.51%

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

Chainguard1 product
  • airflow-2< 2.11.0-r15
Netflix1 product
PyPI1 product
  • lemur< 0.1.5 | < 0.2.1

3 vendors · 3 products

References

8 links