CVE-2018-14645: canonical ubuntu_linux Out-of-bounds Read
Vulnerability summary
CVE-2018-14645 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 3.07% chance of exploitation in the next 30 days, higher than 87.6% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 04-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3 · Related 2Timeline
- 21-09-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.
CVSS metrics
6 scores · 5 sources · 2 versions- NVDNIST7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · Red hatEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
3.07%
Chance of exploitation in the next 30 days
Percentile
88%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.07% on 05-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat34 products
- enterprise_linuxEOL7.0 | 7.3 | 7.4 | 7.5 | 7.6
- openshift3.10
- openshift_container_platform3.9
- atomic-openshift< 0:3.9.60-1.git.0.f8b38ff.el7
- atomic-openshift-clients< 0:3.9.60-1.git.0.f8b38ff.el7
[unknown]1 product
- haproxy1.8.14
Canonical1 product
- ubuntu_linuxEOL18.04
Debian1 product
- haproxy< 1.8.13-2
Haproxy1 product
- haproxy≤ 1.8.14
Ubuntu1 product
- haproxy< 1.8.8-1ubuntu0.2
6 vendors · 39 products
References
22 links- access.redhat.com/errata/RHSA-2018:2882Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14645X Refsource CONFIRMIssue TrackingMitigationThird Party AdvisoryREPORT
