drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in snapd
Name: |
Mehrere Probleme in snapd |
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ID: |
USN-5292-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 21.10 |
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Datum: |
Do, 17. Februar 2022, 22:32 |
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Referenzen: |
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44730
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3155
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4120
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44731 |
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Applikationen: |
Snap |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-5292-1 February 17, 2022
snapd vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in snapd.
Software Description: - snapd: Daemon and tooling that enable snap packages
Details:
James Troup discovered that snap did not properly manage the permissions for the snap directories. A local attacker could possibly use this issue to expose sensitive information. (CVE-2021-3155)
Ian Johnson discovered that snapd did not properly validate content interfaces and layout paths. A local attacker could possibly use this issue to inject arbitrary AppArmor policy rules, resulting in a bypass of intended access restrictions. (CVE-2021-4120)
The Qualys Research Team discovered that snapd did not properly validate the location of the snap-confine binary. A local attacker could possibly use this issue to execute other arbitrary binaries and escalate privileges. (CVE-2021-44730)
The Qualys Research Team discovered that a race condition existed in the snapd snap-confine binary when preparing a private mount namespace for a snap. A local attacker could possibly use this issue to escalate privileges and execute arbitrary code. (CVE-2021-44731)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: snap-confine 2.54.3+21.10.1 snapd 2.54.3+21.10.1
Ubuntu 20.04 LTS: snap-confine 2.54.3+20.04 snapd 2.54.3+20.04
Ubuntu 18.04 LTS: snap-confine 2.54.3+18.04 snapd 2.54.3+18.04
In general, a standard system update will make all the necessary changes.
References: https://ubuntu.com/security/notices/USN-5292-1 CVE-2021-3155, CVE-2021-4120, CVE-2021-44730, CVE-2021-44731
Package Information: https://launchpad.net/ubuntu/+source/snapd/2.54.3+21.10.1 https://launchpad.net/ubuntu/+source/snapd/2.54.3+20.04 https://launchpad.net/ubuntu/+source/snapd/2.54.3+18.04
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