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Sicherheit: Ausführen beliebiger Kommandos in LZ4 (Aktualisierung)
Aktuelle Meldungen Distributionen
Name: Ausführen beliebiger Kommandos in LZ4 (Aktualisierung)
ID: USN-4968-2
Distribution: Ubuntu
Plattformen: Ubuntu 14.04 ESM, Ubuntu 16.04 ESM
Datum: Mo, 31. Mai 2021, 19:38
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3520
Applikationen: LZ4
Update von: Ausführen beliebiger Kommandos in LZ4

Originalnachricht


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==========================================================================
Ubuntu Security Notice USN-4968-2
May 31, 2021

lz4 vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

LZ4 could be made to crash or run programs if it opened a specially crafted
file.

Software Description:
- lz4: Extremely fast compression algorithm

Details:

USN-4968-1 fixed a vulnerability in LZ4. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that LZ4 incorrectly handled certain memory operations.
If a user or automated system were tricked into uncompressing a specially-
crafted LZ4 file, a remote attacker could use this issue to cause LZ4 to
crash, resulting in a denial of service, or possibly execute arbitrary
code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 ESM:
liblz4-1 0.0~r131-2ubuntu2+esm1

Ubuntu 14.04 ESM:
liblz4-1 0.0~r114-2ubuntu1+esm2

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-4968-2
https://ubuntu.com/security/notices/USN-4968-1
CVE-2021-3520

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