01 Record

CVE-2018-20103

An issue was discovered in dns.c in HAProxy through 1.8.14. In the case of a compressed pointer, a crafted packet can trigger infinite recursion by making the pointer point to itself, or create a long

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 6.59% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 93.5% of scored records. A rank, not a probability.
NVD base score: 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2018-12-12 17:00Z7 YR AGO

Last updated

2024-08-05 11:51Z2 YR AGO

Reserved

2018-12-12

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base
CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

e057ef11a0bd505e4314d30013d3012dd421bc6b27989ca2aac02aef6834646a

05 Affected products

VendorProductVersionsPlatforms

canonicalubuntu_linuxNot specified—

haproxyhaproxyNot specified—

redhatenterprise_linuxNot specified—

redhatopenshiftNot specified—

redhatopenshift_container_platformNot specified—

redhatrhel_software_collectionsNot specified—

06 References

www.securityfocus.com106280http://www.securityfocus.com/bid/106280vdb-entryx_refsource_BID
usn.ubuntu.comUSN-3858-1https://usn.ubuntu.com/3858-1/vendor-advisoryx_refsource_UBUNTU
access.redhat.comRHBA-2019:0326https://access.redhat.com/errata/RHBA-2019:0326vendor-advisoryx_refsource_REDHAT
git.haproxy.orghttp://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=58df5aea0a0c926b2238f65908f5e9f83d1cca25x_refsource_MISC
access.redhat.comRHBA-2019:0327https://access.redhat.com/errata/RHBA-2019:0327vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2019:1436https://access.redhat.com/errata/RHSA-2019:1436vendor-advisoryx_refsource_REDHAT
lists.debian.org[debian-lts-announce] 20220530 [SECURITY] [DLA 3034-1] haproxy security updatehttps://lists.debian.org/debian-lts-announce/2022/05/msg00045.htmlmailing-listx_refsource_MLIST

07 Fixed in

Arch Linux

haproxy
Fixed in 1.9.0-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

haproxy
Fixed in 1.8.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

haproxy
Fixed in 1.8.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

haproxy
Fixed in 1.8.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

haproxy
Fixed in 1.8.8-1ubuntu0.3

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.