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Ubuntu: USN-4692-1 (CVE-2018-20482): tar vulnerabilities

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Ubuntu: USN-4692-1 (CVE-2018-20482): tar vulnerabilities

Severity
2
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:P)
Published
12/26/2018
Created
01/15/2021
Added
01/14/2021
Modified
11/27/2024

Description

GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user's process (e.g., a system backup running as root).

Solution(s)

  • ubuntu-pro-upgrade-tar

References

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