CVE-2017-14746

Use-after-free vulnerability in Samba 4.x before 4.7.3 allows remote attackers to execute arbitrary code via a crafted SMB1 request.

Use-after-free vulnerability in Samba 4.x before 4.7.3 allows remote attackers to execute arbitrary code via a crafted SMB1 request.

Updated samba packages fix security vulnerabilities:

Stefan Metzmacher discovered that Samba incorrectly enforced SMB signing in certain situations. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2017-12150)

Stefan Metzmacher discovered that Samba incorrectly handled encryption across DFS redirects. A remote attacker could use this issue to perform a man in the middle attack. (CVE-2017-12151)

Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory when SMB1 is being used. A remote attacker could possibly use this issue to obtain server memory contents. (CVE-2017-12163)

Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory when processing certain SMB1 requests. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2017-14746)

Volker Lendecke discovered that Samba incorrectly cleared memory when returning data to a client. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2017-15275)

The samba package has been updated to version 4.6.12 to fix these issues and other bugs.

Also, the talloc package has been updated to 2.1.10 and the tevent package has been updated to 0.9.34, as they were needed by the updated samba.

These are all security issues fixed in the ctdb-4.14.6+git.182.2205d5224e3-1.1 package on the GA media of openSUSE Tumbleweed.

This update for samba fixes the following issues:

Security issues fixed:

• CVE-2017-14746: Fixed a use-after-free vulnerability that could be used to crash smbd or potentially execute code (bsc#1060427).
• CVE-2017-15275: Fixed a server heap memory information leak (bsc#1063008).

Non-security issues fixed:

• Update 'winbind expand groups' doc in smb.conf man page; (bsc#1027593).

This update for samba fixes the following issues:

Security issues fixed:

• CVE-2017-14746: Use-after-free vulnerability (bsc#1060427).
• CVE-2017-15275: Server heap memory information leak (bsc#1063008).

Bug fixes:

• Update 'winbind expand groups' doc in smb.conf man page (bsc#1027593).

This update for samba fixes the following issues:

Security issues fixed:

• CVE-2017-14746: Use-after-free vulnerability (bsc#1060427).
• CVE-2017-15275: Server heap memory information leak (bsc#1063008).
• CVE-2017-12163: Prevent client short SMB1 write from writing server memory to file (bsc#1058624).
• CVE-2017-12151: Keep required encryption across SMB3 dfs redirects (bsc#1058565).
• CVE-2017-12150: Some code path don't enforce smb signing when they should (bsc#1058565).

Bug fixes:

• Samba was updated to 4.6.9 (bsc#1065066) see release notes for details.
  • https://www.samba.org/samba/history/samba-4.6.9.html

This update for samba fixes the following issues:

Security issues fixed:

• CVE-2018-1050: Fixed denial of service vulnerability when SPOOLSS is run externally (bsc#1081741).
• CVE-2017-14746: Fixed use-after-free vulnerability (bsc#1060427).
• CVE-2017-15275: Fixed server heap memory information leak (bsc#1063008).
• CVE-2018-10858: smbc_urlencode helper function is a subject to buffer overflow (bsc#1103411)

Bug fixes:

• bsc#1027593: Update 'winbind expand groups' doc in smb.conf man page.

Yihan Lian and Zhibin Hu discovered that Samba incorrectly handled memory when processing certain SMB1 requests. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2017-14746)

Volker Lendecke discovered that Samba incorrectly cleared memory when returning data to a client. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2017-15275)