CVE-2019-18197 json
Nokogiri affected by libxslt Use of Uninitialized Resource/Use After Free vulnerability
published 7y ago modified 3mo ago also EUVD-2022-1901 , GHSA-242x-7cm6-4w8j , JLSEC-2026-580
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 4.4%
- EPSS 4.4% chance of exploitation in 30 days, percentile 91%
- public exploits
- 0
- none known
Summary
In xsltCopyText in transform.c in libxslt 1.1.33, a pointer variable isn't reset under certain circumstances. If the relevant memory area happened to be freed and reused in a certain way, a bounds check could fail and memory outside a buffer could be written to, or uninitialized data could be disclosed.
Patch / fix
- rubygems nokogiri 1.10.5
- julia XSLT_jll 1.1.34+0
- libxslt Debian 14, Debian 13, Debian 12 1.1.32-2.2
debian advisories DEBIAN-CVE-2019-18197
- libxslt Ubuntu 16.04 LTS 1.1.28-2.1ubuntu0.3
- libxslt Ubuntu 18.04 LTS 1.1.29-5ubuntu0.2
- libxslt Ubuntu Pro 14.04 LTS 1.1.28-2ubuntu0.2+esm1
ubuntu advisories UBUNTU-CVE-2019-18197
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- libxslt RHEL 8 1.1.32-5.el8
- libxslt RHEL 7 1.1.28-6.el7
- libxslt-python RHEL 7 1.1.28-6.el7
- chromium-browser RHEL 6 EXTRAS 80.0.3987.87-1.el6_10
red hat advisories RHSA-2020:4464RHSA-2020:4005RHSA-2020:0514
- libxslt SLES 12 SP5, SLES 12 SP4, SLES 12 SP3-BCL +14 more 1.1.28-17.9.1
- libxslt SLE Module for Basesystem 15 SP1 1.1.32-3.8.24
suse advisories SUSE-SU-2020:0920-2SUSE-SU-2020:1409-1SUSE-SU-2020:0920-1
- chromium openSUSE Tumbleweed 93.0.4577.82-1.1
- libxslt openSUSE Tumbleweed 1.1.34-3.2
- chromium openSUSE Tumbleweed 113.0.5672.92-1.1
- libxslt openSUSE Leap 15.1 1.1.32-lp151.3.6.1
- libxslt-python openSUSE Leap 15.1 1.1.32-lp151.3.6.1
- re2 Package Hub 12 SP3, Package Hub 12 20200101-25.1
- chromium Package Hub 12 SP3, Package Hub 12 80.0.3987.87-31.1
- chromium Package Hub 15 SP1 80.0.3987.87-bp151.3.59.1
opensuse advisories openSUSE-SU-2024:10681-1openSUSE-SU-2024:11017-1openSUSE-SU-2024:12948-1openSUSE-SU-2020:0731-1openSUSE-SU-2020:0233-1openSUSE-SU-2020:0210-1
- libxslt Alpine 3.10, Alpine 3.9, Alpine 3.8 1.1.33-r2
- libxslt Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 1.1.33-r3
- libxslt Alpine 3.7 1.1.31-r2
alpine advisories ALPINE-CVE-2019-18197
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- chromium Arch Linux 80.0.3987.87-1
arch linux advisories AVG-1092
Is CVE-2019-18197 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2019-18197 updated cvss 7.5
libxslt: use after free in xsltCopyText in transform.c could lead to information disclosure
-
Red Hat Enterprise Linux 5 libxslt Red Hat Enterprise Linux 6 libxslt, libxslt-pythonaffected: no fix planned “Out of support scope”
-
Red Hat OpenStack Platform 10 (Newton) libxslt-python Red Hat OpenStack Platform 13 (Queens) libxslt-python Red Hat OpenStack Platform 14 (Rocky) libxslt-pythonaffected: no fix planned “Will not fix”
-
Red Hat Storage 3 libxslt, libxslt-pythonaffected: no fix available
-
Red Hat Enterprise Linux AppStream (v. 8) libxslt-devel 1.1.32-5.el8, libxslt-debuginfo 1.1.32-5.el8, libxslt-debugsource 1.1.32-5.el8 Red Hat Enterprise Linux BaseOS (v. 8) libxslt 1.1.32-5.el8fixed: vendor fix RHSA-2020:4464
-
Red Hat Enterprise Linux Client (v. 7) libxslt 1.1.28-6.el7 Red Hat Enterprise Linux Client Optional (v. 7) libxslt-python 1.1.28-6.el7 Red Hat Enterprise Linux ComputeNode (v. 7) libxslt 1.1.28-6.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libxslt-python 1.1.28-6.el7fixed: vendor fix RHSA-2020:4005
-
Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 80.0.3987.87-1.el6_10 Red Hat Enterprise Linux HPC Node Supplementary (v. 6) chromium-browser 80.0.3987.87-1.el6_10fixed: vendor fix RHSA-2020:0514
-
Red Hat Enterprise Linux Server (v. 7) libxslt 1.1.28-6.el7 Red Hat Enterprise Linux Server Optional (v. 7) libxslt-python 1.1.28-6.el7fixed: vendor fix RHSA-2020:4005
-
Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 80.0.3987.87-1.el6_10fixed: vendor fix RHSA-2020:0514
show 2 moreshow fewer
-
Red Hat Enterprise Linux Workstation (v. 7) libxslt 1.1.28-6.el7 Red Hat Enterprise Linux Workstation Optional (v. 7) libxslt-python 1.1.28-6.el7fixed: vendor fix RHSA-2020:4005
-
Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 80.0.3987.87-1.el6_10fixed: vendor fix RHSA-2020:0514
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 5mo ago
Exploit prediction
4.45% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 5.1 | AV:N/AC:H/Au:N/C:P/I:P/A:P |
| OSV | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| rubygems | nokogiri | <1.10.5 |
1.10.5 |
| julia | XSLT_jll | <1.1.34+0 |
1.1.34+0 |
Classification
References
-
gitlab.gnome.org
/GNOME/libxslt/commit/2232473733b7313d67de8836ea3b29eec6e8e285
web, patch, third-party-advisory
-
usn.ubuntu.com
/4164-1/
vendor-advisory, third-party-advisory, web
-
lists.opensuse.org
/opensuse-security-announce/2020-02/msg00010.html
vendor-advisory, web
-
lists.opensuse.org
/opensuse-security-announce/2020-02/msg00015.html
vendor-advisory, web
-
access.redhat.com
/errata/RHSA-2020:0514
vendor-advisory, web
-
lists.opensuse.org
/opensuse-security-announce/2020-02/msg00025.html
vendor-advisory, web
-
lists.opensuse.org
/opensuse-security-announce/2020-05/msg00062.html
vendor-advisory, web
-
bugs.chromium.org
/p/oss-fuzz/issues/detail?id=15914
web, issue-tracking, third-party-advisory
-
bugs.chromium.org
/p/oss-fuzz/issues/detail?id=15768
web, issue-tracking, third-party-advisory
-
bugs.chromium.org
/p/oss-fuzz/issues/detail?id=15746
web, issue-tracking, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2019/10/msg00037.html
mailing-list, web, third-party-advisory
-
security.netapp.com
/advisory/ntap-20191031-0004/
third-party-advisory, web
-
openwall.com
/lists/oss-security/2019/11/17/2
mailing-list, web, third-party-advisory
-
oracle.com
/security-alerts/cpuapr2020.html
web
-
security.netapp.com
/advisory/ntap-20200416-0004/
web
-
nvd.nist.gov
/vuln/detail/CVE-2019-18197
advisory
-
github.com
/sparklemotion/nokogiri/issues/1943
web
-
github.com
/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2019-18197.yml
web
-
github.com
/sparklemotion/nokogiri
package
-
github.com
/sparklemotion/nokogiri/blob/01ab95f3e37429ed8d3b380a8d2f73902eb325d9/CHANGELOG.md?plain=1#L934
web
-
security.netapp.com
/advisory/ntap-20191031-0004
web
-
security.netapp.com
/advisory/ntap-20200416-0004
web
-
usn.ubuntu.com
/4164-1
web
Sources
- CVE List CVE-2019-18197
- GitHub Advisory GHSA-242x-7cm6-4w8j
- NVD CVE-2019-18197
- OSV JLSEC-2026-580
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.