CVE-2020-10760: Use After Free
First published: Mon Jun 22 2020(Updated: )
A use-after-free flaw was found in all samba LDAP server versions before 4.10.17, before 4.11.11, before 4.12.4 used in a AC DC configuration. A Samba LDAP user could use this flaw to crash samba.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Samba Samba | >=4.5.0<4.10.17 | |
| Samba Samba | >=4.11.0<4.11.11 | |
| Samba Samba | >=4.12.0<4.12.4 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| Canonical Ubuntu Linux | =20.04 | |
| openSUSE Leap | =15.1 | |
| openSUSE Leap | =15.2 | |
| Fedoraproject Fedora | =31 | |
| ubuntu/samba | <2:4.11.6+dfsg-0ubuntu1.3 | 2:4.11.6+dfsg-0ubuntu1.3 |
| ubuntu/samba | <2:4.7.6+dfsg~ubuntu-0ubuntu2.17 | 2:4.7.6+dfsg~ubuntu-0ubuntu2.17 |
| ubuntu/samba | <2:4.10.7+dfsg-0ubuntu2.6 | 2:4.10.7+dfsg-0ubuntu2.6 |
| ubuntu/samba | <4.10.17<4.11.10<4.12.4 | 4.10.17 4.11.10 4.12.4 |
| redhat/samba | <4.10.17 | 4.10.17 |
| redhat/samba | <4.11.11 | 4.11.11 |
| redhat/samba | <4.12.4 | 4.12.4 |
| debian/samba | <=2:4.9.5+dfsg-5+deb10u3<=2:4.9.5+dfsg-5+deb10u4 | 2:4.13.13+dfsg-1~deb11u5 2:4.17.12+dfsg-0+deb12u1 2:4.19.4+dfsg-3 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1849509;
- https://www.samba.org/samba/security/CVE-2020-10760.html
- https://usn.ubuntu.com/4409-1/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6YLNQ5GRXUKYRUAOFZ4DUBVN4SMTL6Q2/
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html
- https://security.gentoo.org/glsa/202007-15
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00041.html
- https://launchpad.net/bugs/cve/CVE-2020-10760
- https://bugzilla.redhat.com/show_bug.cgi?id=1849509%3B
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6YLNQ5GRXUKYRUAOFZ4DUBVN4SMTL6Q2/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1853276
- https://github.com/samba-team/samba/commit/32c333def9ad5a1c67abee320cf5f3c4f2cb1e5c
- https://security-tracker.debian.org/tracker/CVE-2020-10760
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10760
- https://ubuntu.com/security/notices/USN-4409-1
- https://nvd.nist.gov/vuln/detail/CVE-2020-10760
- https://ubuntu.com/security/CVE-2020-10760
Frequently Asked Questions
What is CVE-2020-10760?
CVE-2020-10760 is a use-after-free vulnerability found in all Samba LDAP server versions before 4.10.17, before 4.11.11, before 4.12.4 used in an AC DC configuration.
How does CVE-2020-10760 impact Samba LDAP server?
CVE-2020-10760 can be exploited by a Samba LDAP user to cause a denial of service (crash) in the Samba LDAP server.
What is the severity of CVE-2020-10760?
CVE-2020-10760 has a severity rating of 6.5 (Medium).
Which versions of Samba LDAP server are affected by CVE-2020-10760?
All Samba LDAP server versions before 4.10.17, before 4.11.11, and before 4.12.4 are affected by CVE-2020-10760.
How can I fix CVE-2020-10760 in my Samba LDAP server?
To fix CVE-2020-10760, update your Samba LDAP server to version 4.10.17, 4.11.11, or 4.12.4, depending on the version you are using.
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