drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Samba
Name: |
Mehrere Probleme in Samba |
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ID: |
USN-4931-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 14.04 ESM |
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Datum: |
Di, 4. Mai 2021, 07:16 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20254
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14318
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14383
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14323 |
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Applikationen: |
Samba |
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Originalnachricht |
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --9YGS1UIUrVGWhzGNc2eVxtrgvWP40psAk Content-Type: multipart/mixed; boundary="cyJ2hnFzdZGIWAAD2LmojImil3DAfegXA"; protected-headers="v1" From: Avital Ostromich <avital.ostromich@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: ubuntu-security-announce@lists.ubuntu.com Message-ID: <95cd9e9f-f35a-48bc-4809-744ad2922c8d@canonical.com> Subject: [USN-4931-1] Samba vulnerabilities
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========================================================================== Ubuntu Security Notice USN-4931-1 May 03, 2021
samba vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 ESM
Summary:
Several security issues were fixed in Samba.
Software Description: - samba: SMB/CIFS file, print, and login server for Unix
Details:
Steven French discovered that Samba incorrectly handled ChangeNotify permissions. A remote attacker could possibly use this issue to obtain file name information. (CVE-2020-14318)
Bas Alberts discovered that Samba incorrectly handled certain winbind requests. A remote attacker could possibly use this issue to cause winbind to crash, resulting in a denial of service. (CVE-2020-14323)
Francis Brosnan Blázquez discovered that Samba incorrectly handled certain invalid DNS records. A remote attacker could possibly use this issue to cause the DNS server to crash, resulting in a denial of service. (CVE-2020-14383)
Peter Eriksson discovered that Samba incorrectly handled certain negative idmap cache entries. This issue could result in certain users gaining unauthorized access to files, contrary to expected behaviour. (CVE-2021-20254)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04 ESM: samba 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11
In general, a standard system update will make all the necessary changes.
References: https://ubuntu.com/security/notices/USN-4931-1 CVE-2020-14318, CVE-2020-14323, CVE-2020-14383, CVE-2021-20254
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