CVE-2018-20482
MEDIUM
4,7
Source: [email protected]
Attack Vector: local
Attack Complexity: high
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
LOW
1,9
Source: [email protected]
Access Vector: local
Access Complexity: medium
Authentication: none
Confidentiality: none
Integrity: none
Availability: partial
Description
AI Translation Available
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).
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0002
Percentile
0,0th
Updated
EPSS Score Trend (Last 90 Days)
835
Loop with Unreachable Exit Condition ('Infinite Loop')
IncompleteCommon Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Cpu)
Dos: Resource Consumption (Memory)
Dos: Amplification
Applicable Platforms
All platforms may be affected
Application
Tar by Gnu
Version Range Affected
To
1.30
(inclusive)
CPE Identifier
View Detailed Analysis
cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System
Debian Linux by Debian
CPE Identifier
View Detailed Analysis
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System
Debian Linux by Debian
CPE Identifier
View Detailed Analysis
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System
Leap by Opensuse
CPE Identifier
View Detailed Analysis
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca…
http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html
https://lists.debian.org/debian-lts-announce/2018/12/msg00023.html
https://lists.debian.org/debian-lts-announce/2021/11/msg00025.html
https://news.ycombinator.com/item?id=18745431
https://security.gentoo.org/glsa/201903-05
https://twitter.com/thatcks/status/1076166645708668928
https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug
http://www.securityfocus.com/bid/106354
http://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca…
http://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html
https://lists.debian.org/debian-lts-announce/2018/12/msg00023.html
https://lists.debian.org/debian-lts-announce/2021/11/msg00025.html
https://news.ycombinator.com/item?id=18745431
https://security.gentoo.org/glsa/201903-05
https://twitter.com/thatcks/status/1076166645708668928
https://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBug
http://www.securityfocus.com/bid/106354