CVE-2018-14404: canonical ubuntu_linux NULL Pointer Dereference
Vulnerability summary
CVE-2018-14404 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 3.75% chance of exploitation in the next 30 days, higher than 89.8% of scored vulnerabilities.
Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 17 · Related 12Timeline
- 19-07-2018PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
Description
A NULL pointer dereference vulnerability exists in the xpath.c:xmlXPathCompOpEval() function of libxml2 through 2.9.8 when parsing an invalid XPath expression in the XPATH_OP_AND or XPATH_OP_OR case. Applications processing untrusted XSL format inputs with the use of the libxml2 library may be vulnerable to a denial of service attack due to a crash of the application.
CVSS metrics
10 scores · 7 sources · 3 versions- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · Red hatEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HDiffers
- 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
- OSV · RubygemsEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
3.75%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
Increase +0.10 pp
From 3.65% on 04-10-2026
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, user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat6 products
- cockpit-ovirt< 0:0.13.10-1.el7ev
- cockpit-ovirt-dashboard< 0:0.13.10-1.el7ev
- redhat-release-virtualization-host< 0:4.3.9-2.el7ev
- redhat-virtualization-host< 0:4.3.9-20200324.0.el7_8
- redhat-virtualization-host-image-update< 0:4.3.9-20200324.0.el7_8
Debian2 products
- libxml2< 2.9.10+dfsg-2
- debian_linuxna
Alpine1 product
- libxml2< 2.9.8-r1
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04
RubyGems1 product
- nokogiri< 1.8.5
Ubuntu1 product
- libxml2< 2.9.1+dfsg1-3ubuntu4.13 | < 2.9.3+dfsg1-1ubuntu0.6 | < 2.9.4+dfsg1-6.1ubuntu1.2
Xmlsoft1 product
- libxml2≤ 2.9.8
7 vendors · 13 products
References
30 links
- bugzilla.redhat.com/show_bug.cgi?id=1595985X Refsource MISCIssue TrackingThird Party AdvisoryREPORTWEB
- security.netapp.com/advisory/ntap-20190719-0002/X Refsource CONFIRM
