Home/CVE/The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by carriage return (CR, ASCII 0xd
CVE

CVE-2019-19330

The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by carriage return (CR, ASCII 0xd

The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by carriage return (CR, ASCII 0xd), line feed (LF, ASCII 0xa), and the zero character (NUL, ASCII 0x0), aka Intermediary Encapsulation Attacks.

CRITICAL · CVSS 9.8 EPSS 0.01056
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
▤

Affected Products & Versions

3
haproxy< 2.0.10
canonical ubuntu linuxall versions
debian linuxall versions
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Nov 2019 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

5
rhsaRHSA-2020:1287Critical
rhsaRHSA-2020:1936Critical
usnUSN-4212-1
rhsaRHSA-2020:2265Moderate
rhsaRHSA-2020:1725Moderate
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://git.haproxy.org/?p=haproxy-2.0.git
https://git.haproxy.org/?p=haproxy.git
https://git.haproxy.org/?p=haproxy.git
https://seclists.org/bugtraq/2019/Nov/45Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202004-01
https://tools.ietf.org/html/rfc7540#section-10.3Third Party Advisory
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