CVE-2024-45506
High PUBLISHEDHAProxy 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...
Not yet in CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- Sep 04, 2024
- Exploitation Reported
- Sep 04, 2024
- CVSS
- 7.5 High
- EPSS
- —
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| haproxy |
haproxy
|
2.9.0 to < 2.9.10 |
Affected |
| haproxy |
haproxy
|
3.0.0 to < 3.0.4 |
Affected |
| haproxy |
haproxy
|
3.1.0 to < 3.1-dev6 |
Affected |
| n/a |
n/a
|
n/a |
Affected |
CVE References
- haproxy.org haproxy.org · CVE Record https://www.haproxy.org/
- haproxy.org/download/3.1/src/CHANGELOG haproxy.org · CVE Record https://www.haproxy.org/download/3.1/src/CHANGELOG
- mail-archive.com/haproxy%40formilux.org/msg45281.html mail-archive.com · CVE Record https://www.mail-archive.com/haproxy%40formilux.org/msg45281.html
- mail-archive.com/haproxy%40formilux.org/msg45280.html mail-archive.com · CVE Record https://www.mail-archive.com/haproxy%40formilux.org/msg45280.html
- git.haproxy.org git.haproxy.org · CVE Record http://git.haproxy.org/?p=haproxy-3.0.git%3Ba=commitdiff%3Bh=c725db17...
Show 1 more reference
- git.haproxy.org git.haproxy.org · CVE Record http://git.haproxy.org/?p=haproxy-3.0.git%3Ba=commitdiff%3Bh=d636e515...
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2024-09-04 00:00 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitation Status
Exploited in the wild
Recorded 2024-09-04 00:00:00 UTC · CVE
Weaknesses (CWE)
-
Loop with Unreachable Exit Condition ('Infinite Loop')
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
00:00 UTC almost 2 years ago00:00 UTC · almost 2 years ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
00:00 UTC almost 2 years ago00:00 UTC · almost 2 years ago
CVE published
Vulnerability disclosed publicly
-
00:00 UTC almost 2 years ago00:00 UTC · almost 2 years ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2024-45506
{
"cve_id": "CVE-2024-45506",
"title": "HAProxy 2.9.x before 2.9.10, 3.0.x before 3.0.4, and 3.1.x through 3.1-dev6 a...",
"affected_vendor": "HAProxy",
"affected_product": "HAProxy",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "High",
"cvss_score": 7.5,
"epss_score": null,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}