PT-2019-5250 · Haproxy+4 · Haproxy+4

Tim Düsterhus · Published 2019-11-25 · Updated 2020-08-18 · CVE-2019-19330

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions HAProxy versions prior to 2.0.10

Description The issue is related to the HTTP/2 implementation in HAProxy, which mishandles headers. This can be exploited by an attacker to gain access to confidential data, disrupt data integrity, and cause a denial of service. The vulnerability is demonstrated by the improper handling of carriage return (CR, ASCII 0xd), line feed (LF, ASCII 0xa), and the zero character (NUL, ASCII 0x0).

Recommendations For HAProxy versions prior to 2.0.10, update to version 2.0.10 or later to resolve the issue. As a temporary workaround, consider restricting access to sensitive data and implementing additional security measures to prevent exploitation.

Fix

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

ALT-PU-2019-3294

ALT-PU-2020-1530

BDU:2020-02041

CESA-2020_1725

CVE-2019-19330

DSA-4577-1

RHSA-2020:1287

RHSA-2020:1725

RHSA-2020:1936

RHSA-2020:2265

RHSA-2020_1725

USN-4212-1

Affected Products

Alt Linux

Centos

Haproxy

Red Hat

Ubuntu

References · 39

• https://ubuntu.com/security/CVE-2019-19330 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4577-1 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2019-19330 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-02041 · Security Note
• https://osv.dev/vulnerability/CVE-2019-19330 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-19330 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-19330 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2019-19330 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2020-1725.html · Vendor Advisory
• https://usn.ubuntu.com/4212-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4212-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/source-package/haproxy · Vendor Advisory
• https://security.gentoo.org/glsa/202004-01 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18277 · Security Note
• https://errata.altlinux.org/ALT-PU-2019-3294 · Vendor Advisory