CVE-2017-18258
First published: Thu Sep 07 2017(Updated: )
A flaw was found in libxml2 before 2.9.6. The xz_head function in xzlib.c in allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file. References: <a href="https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb">https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| rubygems/nokogiri | <1.8.2 | 1.8.2 |
| redhat/libxml2 | <0:2.9.1-6.el7.4 | 0:2.9.1-6.el7.4 |
| Xmlsoft Libxml2 | <2.9.6 | |
| redhat/libxml2 | <2.9.6 | 2.9.6 |
| debian/libxml2 | 2.9.10+dfsg-6.7+deb11u4 2.9.10+dfsg-6.7+deb11u5 2.9.14+dfsg-1.3~deb12u1 2.12.7+dfsg+really2.9.14-0.2 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2017-18258
- https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb
- https://github.com/advisories/GHSA-882p-jqgm-f45g (Advisory)
- https://kc.mcafee.com/corporate/index?page=content&id=SB10284
- https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html
- https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html
- https://security.netapp.com/advisory/ntap-20190719-0001/
- https://usn.ubuntu.com/3739-1/
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2017-18258.yml
- https://www.cve.org/CVERecord?id=CVE-2017-18258 https://nvd.nist.gov/vuln/detail/CVE-2017-18258
- https://bugzilla.redhat.com/show_bug.cgi?id=1566749
- https://access.redhat.com/errata/RHBA-2020:1539
- https://access.redhat.com/errata/RHBA-2020:1540
- https://access.redhat.com/errata/RHSA-2020:1190
- https://access.redhat.com/errata/RHSA-2018:2486
- https://access.redhat.com/security/cve/cve-2017-18258
- https://kc.mcafee.com/corporate/index?page=content&id=SB10284
- https://launchpad.net/bugs/cve/CVE-2017-18258
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1566751
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1566750
- https://access.redhat.com/security/cve/CVE-2018-14567
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619875
- https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912
- https://bugzilla.gnome.org/show_bug.cgi?id=786696
- https://gitlab.gnome.org/GNOME/libxml2/-/commit/e2a9122b8dde53d320750451e9907a7dcb2ca8bb
- https://bugzilla.gnome.org/show_bug.cgi?id=794914
- https://security-tracker.debian.org/tracker/CVE-2017-18258
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18258
- https://ubuntu.com/security/CVE-2017-18258
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2017-18258?
CVE-2017-18258 is a vulnerability in libxml2 that allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file.
Which software is affected by CVE-2017-18258?
The software affected by CVE-2017-18258 includes Nokogiri (version 1.8.2), libxml2 (versions 2.9.1+dfsg1-3ubuntu4.13, 2.9.4+dfsg1-6.1ubuntu1.2, 2.9.6, 2.9.3+dfsg1-1ubuntu0.6), and libxml2 (versions 2.9.4+dfsg1-7+deb10u4, 2.9.4+dfsg1-7+deb10u6, 2.9.10+dfsg-6.7+deb11u4, 2.9.14+dfsg-1.3~deb12u1, 2.9.14+dfsg-1.3).
What is the severity of CVE-2017-18258?
The severity of CVE-2017-18258 is medium with a CVSS score of 6.5.
How do I fix CVE-2017-18258?
To fix CVE-2017-18258, you should update libxml2 to version 2.9.6 or apply the necessary patches provided by the software vendor.
Where can I find more information about CVE-2017-18258?
You can find more information about CVE-2017-18258 at the following references: [Git Repository](https://git.gnome.org/browse/libxml2/commit/?id=e2a9122b8dde53d320750451e9907a7dcb2ca8bb), [Ubuntu Security Notice](https://usn.ubuntu.com/3739-1/), [Debian Security Advisory](https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html).
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