CVE-2019-18197: Use After Free
First published: Fri Oct 18 2019(Updated: )
A vulnerabiliy was found 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. Reference: <a href="https://security.netapp.com/advisory/ntap-20191031-0004/">https://security.netapp.com/advisory/ntap-20191031-0004/</a> <a href="https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746">https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746</a> <a href="https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768">https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768</a> <a href="https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914">https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914</a> <a href="https://gitlab.gnome.org/GNOME/libxslt/commit/2232473733b7313d67de8836ea3b29eec6e8e285">https://gitlab.gnome.org/GNOME/libxslt/commit/2232473733b7313d67de8836ea3b29eec6e8e285</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xmlsoft Libxslt | =1.1.33 | |
| Linux Linux kernel | ||
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| Debian Debian Linux | =8.0 | |
| All of | ||
| Xmlsoft Libxslt | =1.1.33 | |
| Linux Linux kernel | ||
| redhat/libxslt | <1.1.34 | 1.1.34 |
| debian/libxslt | 1.1.34-4+deb11u1 1.1.35-1 1.1.35-1.1 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00062.html
- http://www.openwall.com/lists/oss-security/2019/11/17/2
- https://access.redhat.com/errata/RHSA-2020:0514
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15746
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15768
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15914
- https://gitlab.gnome.org/GNOME/libxslt/commit/2232473733b7313d67de8836ea3b29eec6e8e285
- https://lists.debian.org/debian-lts-announce/2019/10/msg00037.html
- https://security.netapp.com/advisory/ntap-20191031-0004/
- https://security.netapp.com/advisory/ntap-20200416-0004/
- https://usn.ubuntu.com/4164-1/
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://launchpad.net/bugs/cve/CVE-2019-18197
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1770770
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1770772
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1770773
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1770774
- https://access.redhat.com/security/cve/cve-2019-18197
- https://access.redhat.com/errata/RHSA-2020:4005
- https://access.redhat.com/errata/RHSA-2020:4464
- https://bugzilla.redhat.com/show_bug.cgi?id=1770768
- https://security-tracker.debian.org/tracker/CVE-2019-18197
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18197
- https://nvd.nist.gov/vuln/detail/CVE-2019-18197
- https://ubuntu.com/security/CVE-2019-18197
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2019-18197.
What is the severity level of CVE-2019-18197?
The severity level of CVE-2019-18197 is high.
Which software is affected by CVE-2019-18197?
The affected software is libxslt version 1.1.33.
How can I fix CVE-2019-18197?
To fix CVE-2019-18197, you should update to libxslt version 1.1.34 or higher.
Are there any references for CVE-2019-18197?
Yes, you can find references for CVE-2019-18197 at the following links: [Reference 1](http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00010.html), [Reference 2](http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00015.html), [Reference 3](http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00025.html).
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