CVE-2024-45506 (GCVE-0-2024-45506)

Vulnerability from cvelistv5 – Published: 2024-09-04 00:00 – Updated: 2025-03-14 19:16
VLAI Previdian
Summary
HAProxy 2.9.x before 2.9.10, 3.0.x before 3.0.4, and 3.1.x through 3.1-dev6 allows a remote denial of service for HTTP/2 zero-copy forwarding (h2_send loop) under a certain set of conditions, as exploited in the wild in 2024.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-04 16:05 UTC
CWE
  • n/a
  • CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
Vendor Product Version
haproxy haproxy Affected: 2.9.0 , < 2.9.10 (custom)
Affected: 3.0.0 , < 3.0.4 (custom)
Affected: 3.1.0 , < 3.1-dev6 (custom)
    cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
Create a notification for this product.
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 324b2763-7817-4eba-9b4c-90b5e1cb24af

Vulnerability ID: CVE-2024-45506

Status: Confirmed

Status Updated: 2024-09-04 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2024-09-04
Asserted: 2024-09-04
Scope
Notes: HAProxy 2.9.x before 2.9.10, 3.0.x before 3.0.4, and 3.1.x through 3.1-dev6 allows a remote denial of service for HTTP/2 zero-copy forwarding... | Affected: HAProxy / HAProxy | CVSS: 7.5 (HIGH) | EPSS: 0.01203 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title HAProxy 2.9.x before 2.9.10, 3.0.x before 3.0.4, and 3.1.x through 3.1-dev6 allows a remote denial of service for HTTP/2 zero-copy forwarding...
Cve Id CVE-2024-45506
Vendor HAProxy
Ghsa Id None
Product HAProxy
Added Date 2024-09-04T00:00:00.000Z
Cvss Score 7.5
Epss Score 0.01203
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.67132
Used In Malware unknown
Vulnerability Id CVE-2024-45506
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website
To clipboard 

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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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