[3.11] samba: Multiple vulnerabilities (CVE-2019-12435, CVE-2019-12436)
CVE-2019-12435: Samba AD DC Denial of Service in DNS management server (dnsserver)
The (poorly named) dnsserver RPC pipe provides administrative
facilities to modify DNS records and zones.
An authenticated user can crash the RPC server process via a NULL
pointer de-reference.
There is no further vulnerability associated with this issue, merely a
denial of service.
Affected Versions:
Samba 4.9 and 4.10
Fixed In Version:
Samba 4.9.9 and 4.10.5
References:
https://www.samba.org/samba/security/CVE-2019-12435.html
https://www.samba.org/samba/history/security.html
Patches:
https://download.samba.org/pub/samba/patches/security/samba-4.9.8-security-2019-06-19.patch
https://download.samba.org/pub/samba/patches/security/samba-4.10.4-security-2019-06-19.patch
CVE-2019-12436: Samba AD DC LDAP server crash (paged searches)
A user with read access to the LDAP server can crash the LDAP
server process. Depending on the Samba version and the choice
of process model, this may crash only the user’s own connection.
Specifically, while in Samba 4.10 the default is for one process per
connected client, site-specific configuration trigger can change
this.
Samba 4.10 also supports the ‘prefork’ process model and by
using the -M option to ‘samba’ and a ‘single’ process model.
Both of these share on process between multiple clients.
Affected Versions:
All versions of Samba since Samba 4.10.0
Fixed In Version:
Samba 4.10.5
References:
https://www.samba.org/samba/security/CVE-2019-12436.html
Patch:
https://download.samba.org/pub/samba/patches/security/samba-4.10.4-security-2019-06-19.patch
(from redmine: issue id 10589, created on 2019-06-20, closed on 2019-06-21)
- Relations:
- parent #10588 (closed)
- Changesets:
- Revision bcc49b4c on 2019-06-20T08:09:34Z:
main/samba: security upgrade to 4.10.5
CVE-2019-12435
CVE-2019-12436
fixes #10589- Revision a80d49fc on 2019-06-20T08:43:16Z:
main/samba: security upgrade to 4.10.5
CVE-2019-12435
CVE-2019-12436
fixes #10589