7.5

CVE-2024-32974: envoyproxy envoy Use After Free

CVSS: 7.5v3.1HighModified
Published 04-06-2024Last modified 02-08-2024
Open JSON

Vulnerability summary

CVE-2024-32974 is a high (CVSS 7.5) Use After Free vulnerability in envoyproxy envoy. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 52% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.69%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 04-06-2024
    PublishedVulnerability first disclosed.
  2. 02-08-2024
    Last modifiedVulnerability information updated.

Description

Envoy is a cloud-native, open source edge and service proxy. A crash was observed in `EnvoyQuicServerStream::OnInitialHeadersComplete()` with following call stack. It is a use-after-free caused by QUICHE continuing push request headers after `StopReading()` being called on the stream. As after `StopReading()`, the HCM's `ActiveStream` might have already be destroyed and any up calls from QUICHE could potentially cause use after free.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.69%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

0.00 pp

From 0.69% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.69%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Envoy

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Envoyproxy1 product
  • envoy≥ 1.30.0, ≤ 11.30.1 | ≥ 1.29.0, ≤ 1.29.4 | ≥ 1.28.0, ≤ 1.28.3 | ≤ 1.27.5 | < 1.27.6 | ≥ 1.28.0, < 1.28.4 | ≥ 1.29.0, < 1.29.5 | ≥ 1.30.0, < 1.30.2

1 vendor · 1 product

References

1 links