CVE-2019-19330
CRITICAL
9.8
CVSS Score
Published: November 27, 2019 at 03:53 PM UTC
Updated: June 17, 2026 at 02:26 AM UTC
3 products affected across 3 vendorsDebian LinuxUbuntu LinuxHAProxy
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Severity
CRITICAL9.8
Exploit prediction
EPSS 4%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%Debian Linux· Debiandrupal
95%Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (8)
Mailing Listx_refsource_BUGTRAQThird Party Advisory
Source: [email protected]
https://seclists.org/bugtraq/2019/Nov/45Vendor Advisoryx_refsource_GENTOO
Source: [email protected]
https://security.gentoo.org/glsa/202004-01x_refsource_MISCThird Party Advisory
Source: [email protected]
https://tools.ietf.org/html/rfc7540#section-10.3Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4212-1/Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2019/dsa-4577CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-74
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