5.9

CVE-2024-34362: envoyproxy envoy Use After Free

CVSS: 5.9v3.1MediumModified
Published 04-06-2024Last modified 19-08-2024
Open JSON

Vulnerability summary

CVE-2024-34362 is a medium (CVSS 5.9) Use After Free vulnerability in envoyproxy envoy. EPSS estimates a 0.59% chance of exploitation in the next 30 days, higher than 47.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.59%
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. 19-08-2024
    Last modifiedVulnerability information updated.

Description

Envoy is a cloud-native, open source edge and service proxy. There is a use-after-free in `HttpConnectionManager` (HCM) with `EnvoyQuicServerStream` that can crash Envoy. An attacker can exploit this vulnerability by sending a request without `FIN`, then a `RESET_STREAM` frame, and then after receiving the response, closing the connection.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.59%

Chance of exploitation in the next 30 days

Percentile

47%

Versus all other CVEs

30-day change

0.00 pp

From 0.59% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.59%

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