CVE-2020-10700: Use After Free
First published: Mon May 04 2020(Updated: )
A use-after-free flaw was found in the way samba AD DC LDAP servers, handled 'Paged Results' control is combined with the 'ASQ' control. A malicious user in a samba AD could use this flaw to cause denial of service. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Samba | >=4.10.0<4.10.15 | |
| Samba | >=4.11.0<4.11.8 | |
| Samba | >=4.12.0<4.12.2 | |
| Fedora | =30 | |
| Fedora | =31 | |
| Fedora | =32 | |
| SUSE Linux | =15.2 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00054.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00002.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10700
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U5KW3ZO35NVDO57JSBZHTQZOS3AIQ5QE/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WG54NRMES2GTURZKZH6H4BGXCD3OMJDJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y7DVGCHG3XPIBQ5ETGMGW7MXNOO4HFH4/
- https://security.gentoo.org/glsa/202007-15
- https://www.samba.org/samba/security/CVE-2020-10700.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WG54NRMES2GTURZKZH6H4BGXCD3OMJDJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y7DVGCHG3XPIBQ5ETGMGW7MXNOO4HFH4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U5KW3ZO35NVDO57JSBZHTQZOS3AIQ5QE/
Frequently Asked Questions
What is the severity of CVE-2020-10700?
CVE-2020-10700 has a severity rating that indicates it can lead to denial of service for impacted Samba Active Directory servers.
How do I fix CVE-2020-10700?
To fix CVE-2020-10700, upgrade to Samba version 4.10.15, 4.11.8, or 4.12.2 or later.
Which versions of Samba are affected by CVE-2020-10700?
CVE-2020-10700 affects all Samba versions prior to 4.10.15, 4.11.8, and 4.12.2.
Can CVE-2020-10700 be exploited by remote attackers?
Yes, a malicious user within a Samba Active Directory could exploit CVE-2020-10700 to cause a denial of service.
Is CVE-2020-10700 applicable to Fedora or openSUSE?
Yes, Fedora versions 30, 31, and 32, as well as openSUSE Leap 15.2, are also affected by CVE-2020-10700.
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- agent/softwarecombine
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- vendor/samba
- canonical/samba
- version/samba/4.10.0
- version/samba/4.11.0
- version/samba/4.12.0
- vendor/fedoraproject
- canonical/fedora
- version/fedora/30
- version/fedora/31
- version/fedora/32
- vendor/opensuse
- canonical/suse linux
- version/suse linux/15.2