MGASA-2019-0034 - GNU tar has been updated to fix CVE-2018-20482

Publication date: 11 Jan 2019
URL: https://advisories.mageia.org/MGASA-2019-0034.html
Type: security
Affected Mageia releases: 6
CVE: CVE-2018-20482

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).

References:
- https://bugs.mageia.org/show_bug.cgi?id=24117
- https://lists.gnu.org/archive/html/bug-tar/2019-01/msg00000.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20482

SRPMS:
- 6/core/tar-1.31-1.mga6

Mageia: MGASA-2019-0034: GNU tar has been updated to fix CVE-2018-20482

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_...

Summary

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).

References

- https://bugs.mageia.org/show_bug.cgi?id=24117

- https://lists.gnu.org/archive/html/bug-tar/2019-01/msg00000.html

- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20482

Resolution

MGASA-2019-0034 - GNU tar has been updated to fix CVE-2018-20482

SRPMS

- 6/core/tar-1.31-1.mga6

Severity
Publication date: 11 Jan 2019
URL: https://advisories.mageia.org/MGASA-2019-0034.html
Type: security
CVE: CVE-2018-20482

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