PT-2024-31601 · H2O+1 · H2O+1

Mwedl · Published 2024-10-11 · Updated 2024-11-12 · CVE-2024-45397

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: h2o (affected versions not specified)

Description: The issue concerns an HTTP server that supports various HTTP versions. When specific conditions are met, such as receiving an HTTP request using TLS/1.3 early data on top of TCP Fast Open or QUIC 0-RTT packets, and IP-address-based access control is in use, the access control fails to detect and block HTTP requests from packets with a spoofed source address. This allows attackers to execute HTTP requests from addresses that would normally be rejected.

Recommendations: For all affected versions, consider disabling the use of TCP FastOpen and QUIC as a temporary mitigation measure until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Access Control

Authentication Bypass by Spoofing

Weakness Enumeration

CWE-284

CWE-290

Related Identifiers

CVE-2024-45397

GHSA-JF2C-XJCP-WG4C

Affected Products

Debian

H2O

References · 12

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/45xxx/CVE-2024-45397.json · Exploit
• https://github.com/h2o/h2o/commit/15ed15a2efb83a77bb4baaa5a119e639c2f6898a · Patch
• https://github.com/h2o/h2o/security/advisories/GHSA-jf2c-xjcp-wg4c · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2024-45397 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-45397 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-45397 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2024-45397 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-45397 · Security Note
• https://ubuntu.com/security/CVE-2024-45397 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2024-45397 · Vendor Advisory
• https://h2o.examp1e.net/configure/http3_directives.html · Note
• https://t.me/cvedetector/7688 · Telegram Post