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01 Record

CVE-2024-39305

Envoy Proxy use after free when route hash policy is configured with cookie attributes

MediumPUBLISHEDCNA: GitHub_M
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
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02 Description

Envoy Proxy use after free when route hash policy is configured with cookie attributes

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.64% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 50.8% of scored records. A rank, not a probability.
NVD base score
9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-07-01 21:10Z2 YR AGO
Last updated
2024-08-02 04:19Z2 YR AGO
Reserved
2024-06-21
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weaknesses
Data version
5.1
Document digest
cc55a5979c945d5d467d3d107ab9b07621c897afc7ea35d72866793cf923f957

05 Affected products

VendorProductVersionsPlatforms
envoyproxyenvoy>= 1.30.0, < 1.30.4, >= 1.29.0, < 1.29.7, >= 1.28.0, < 1.28.5, < 1.27.7, 1.28.0 to < 1.28.5, 1.29.0 to < 1.29.7, 1.30.0 to < 1.30.4, 0 to < 1.27.7—

06 References