Executive Summary

Summary
TitleTar: Denial of Service
Informations
NameGLSA-201903-05First vendor Publication2019-03-10
VendorGentooLast vendor Modification2019-03-10
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector : (AV:L/AC:M/Au:N/C:N/I:N/A:P)
Cvss Base Score1.9Attack RangeLocal
Cvss Impact Score2.9Attack ComplexityMedium
Cvss Expoit Score3.4AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability in Tar could led to a Denial of Service condition.

Background

The Tar program provides the ability to create and manipulate tar archives.

Description

The sparse_dump_region function in sparse.c file in Tar allows an infinite loop using the --sparse option.

Impact

A local attacker could cause a Denial of Service condition by modifying a file that is supposed to be archived by a different user's process
(e.g., a system backup running as root).

Workaround

There is no known workaround at this time.

Resolution

All Tar users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/tar-1.30-r1"

References

[ 1 ] CVE-2018-20482 : https://nvd.nist.gov/vuln/detail/CVE-2018-20482

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201903-05

Original Source

Url : http://security.gentoo.org/glsa/glsa-201903-05.xml

CWE : Common Weakness Enumeration

%idName
100 %CWE-125Out-of-bounds Read

CPE : Common Platform Enumeration

TypeDescriptionCount
Application39
Os1
Os1

Nessus® Vulnerability Scanner

DateDescription
2019-01-02Name : The remote Debian host is missing a security update.
File : debian_DLA-1623.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
DateInformations
2019-03-11 13:21:19
  • Multiple Updates
2019-03-10 21:18:51
  • First insertion