CVE-2018-20532: Null Pointer Dereference
First published: Fri Dec 28 2018(Updated: )
A vulnerability was found in libsolv through 0.7.2. There is a NULL pointer dereference at ext/testcase.c (function testcase_read) in libsolvext.a that will cause a denial of service. References: <a class="bz_bug_link bz_status_CLOSED bz_closed bz_public " title="CLOSED CURRENTRELEASE - CVE-2018-20532 libsolv: NULL pointer dereference in function testcase_read [rhel-8]" href="show_bug.cgi?id=1652605">https://bugzilla.redhat.com/show_bug.cgi?id=1652605</a> Upstream Patch: <a href="https://github.com/openSUSE/libsolv/pull/291">https://github.com/openSUSE/libsolv/pull/291</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Opensuse Libsolv | <=0.7.2 | |
| Canonical Ubuntu Linux | =18.10 | |
| debian/libsolv | 0.7.17-1+deb11u1 0.7.23-1+deb12u1 0.7.30-1 0.7.30-2 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html
- https://access.redhat.com/errata/RHSA-2019:2290
- https://bugzilla.redhat.com/show_bug.cgi?id=1652605
- https://github.com/openSUSE/libsolv/pull/291
- https://usn.ubuntu.com/3916-1/
- https://launchpad.net/bugs/cve/CVE-2018-20532
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1652605
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1665533
- https://access.redhat.com/security/cve/cve-2018-20532
- https://bugzilla.redhat.com/show_bug.cgi?id=1665532
- https://github.com/openSUSE/libsolv/commit/4830af9d979d3685de538b80fbeba51ad590525e
- https://security-tracker.debian.org/tracker/CVE-2018-20532
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20532
- https://nvd.nist.gov/vuln/detail/CVE-2018-20532
- https://ubuntu.com/security/CVE-2018-20532
Frequently Asked Questions
What is CVE-2018-20532?
CVE-2018-20532 is a vulnerability that allows a NULL pointer dereference in libsolv through 0.7.2, leading to a denial of service.
Which software is affected by CVE-2018-20532?
The affected software includes libsolv 0.6.35-2+deb10u1, libsolv 0.6.35-2ubuntu0.18.10.1, libsolv 0.6.5-2ubuntu1, and more.
What is the severity of CVE-2018-20532?
CVE-2018-20532 has a severity rating of 6.5 (medium).
How can I fix CVE-2018-20532?
To fix CVE-2018-20532, update to libsolv version 0.7.17-1, 0.7.23-1, or 0.7.25-1.
Where can I find more information about CVE-2018-20532?
You can find more information about CVE-2018-20532 at the following references: http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00057.html, https://access.redhat.com/errata/RHSA-2019:2290, and https://bugzilla.redhat.com/show_bug.cgi?id=1652605.
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