Vulnerability in Haproxy
CVE-2019-19330
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.040 (90.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000
Affected products
- Haproxy
- Canonical Ubuntu Linux — versions 18.04, 19.04, 19.10
- Debian Linux — versions 10.0
Weakness classification (CWE)
References
- git.haproxy.org/
- git.haproxy.org/
- git.haproxy.org/
- tools.ietf.org/html/rfc7540 (Third Party Advisory)
- www.debian.org/security/2019/dsa-4577 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/Nov/45 (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4212-1/ (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202004-01 (vendor-advisory)
Frequently asked questions
- What is CVE-2019-19330?
- CVE-2019-19330 is a critical-severity vulnerability in Haproxy, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2019-11-27.
- How severe is CVE-2019-19330?
- Critical severity. CVSS v3 base score is 9.8 out of 10.