CVE-2020-14392: Buffer Overflow
First published: Wed Sep 09 2020(Updated: )
A flaw was found in perl-dbi before version 1.643. Macro ST(*) returns pointer to Perl stack. Other Perl functions which use Perl stack (e.g. eval) may reallocate Perl stack and therefore pointer returned by ST(*) macro is invalid which may lead to memory corruption. Upstream patch: <a href="https://github.com/perl5-dbi/dbi/commit/ea99b6aafb437db53c28fd40d5eafbe119cd66e1">https://github.com/perl5-dbi/dbi/commit/ea99b6aafb437db53c28fd40d5eafbe119cd66e1</a>
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Perl Database Interface | <1.643 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| openSUSE Leap | =15.1 | |
| openSUSE Leap | =15.2 | |
| Fedoraproject Fedora | =31 | |
| Debian Debian Linux | =9.0 | |
| redhat/perl-DBI | <1.643 | 1.643 |
| debian/libdbi-perl | 1.643-3 1.643-4 1.645-1 | |
| Fedora | =31 | |
| Debian | =9.0 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00067.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00074.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1877402
- https://lists.debian.org/debian-lts-announce/2020/09/msg00026.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JXLKODJ7B57GITDEZZXNSHPK4VBYXYHR/
- https://metacpan.org/pod/distribution/DBI/Changes#Changes-in-DBI-1.643
- https://usn.ubuntu.com/4503-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JXLKODJ7B57GITDEZZXNSHPK4VBYXYHR/
- https://github.com/perl5-dbi/dbi/commit/ea99b6aafb437db53c28fd40d5eafbe119cd66e1
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1877403
- https://launchpad.net/bugs/cve/CVE-2020-14392
- https://security-tracker.debian.org/tracker/CVE-2020-14392
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14392
- https://nvd.nist.gov/vuln/detail/CVE-2020-14392
- https://ubuntu.com/security/CVE-2020-14392
Frequently Asked Questions
What is CVE-2020-14392?
CVE-2020-14392 is a vulnerability found in Perl-DBI < 1.643 that allows a local attacker to cause memory corruption, affecting the service's availability.
How severe is CVE-2020-14392?
CVE-2020-14392 has a severity score of 5.5, which is classified as medium severity.
Which software versions are affected by CVE-2020-14392?
Perl-DBI versions earlier than 1.643 are affected by CVE-2020-14392.
How can a local attacker exploit CVE-2020-14392?
A local attacker can exploit CVE-2020-14392 by manipulating calls to dbd_db_login6_sv() to cause memory corruption.
Are there any remedies available for CVE-2020-14392?
Yes, the Debian package libdbi-perl versions 1.642-1+deb10u2, 1.643-3, and 1.643-4 provide remedies for CVE-2020-14392.
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