PT-2018-3533 · Haproxy+3 · Haproxy+3

Tim Düsterhus · Published 2018-12-31 · Updated 2024-06-15 · CVE-2018-20615

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: HAProxy versions 1.8.x through 1.9.0

Description: An out-of-bounds read issue was discovered in the HTTP/2 protocol decoder, which can result in a crash. The issue arises from the processing of the PRIORITY flag in a HEADERS frame, where 5 extra bytes are required but not properly checked, potentially leading to a denial of service. This can be exploited by a remote attacker using a specially crafted packet.

Recommendations: For HAProxy versions 1.8.x through 1.9.0, consider disabling the HTTP/2 protocol decoder until a patch is available to prevent potential crashes. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2019-1071

BDU:2020-03307

CVE-2018-20615

OPENSUSE-SU-2019:0166-1

OPENSUSE-SU-2019_0166-1

OPENSUSE-SU-2024:10839-1

RHSA-2019:0275

RHSA-2019:0547

RHSA-2019:0548

SUSE-SU-2019:0232-1

SUSE-SU-2019_0232-1

USN-3858-1

Affected Products

Alt Linux

Haproxy

Suse

Ubuntu

References · 48

• https://ubuntu.com/security/CVE-2018-20102 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-20615 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20103 · Security Note
• https://usn.ubuntu.com/3858-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10839-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-20615 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3858-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20103 · Vendor Advisory
• https://errata.altlinux.org/ALT-PU-2019-1071 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-03309 · Security Note
• https://access.redhat.com/errata/RHSA-2019:0275 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-03308 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20615 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-20615 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3858-1 · Vendor Advisory