CVE-2018-20482

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.53% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 44.5% of scored records. A rank, not a probability.

NVD base score

4.7 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-14.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2018-12-26 18:00Z7 YR AGO

Last updated

2026-10-14 06:30Z15 DAYS AGO

Reserved

2018-12-26

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base

Data version

5.2

Document digest

523418da660855ac4b665edc4eb4819d72b91a0a73afff9cccbf54c32a7e1662

• utcc.utoronto.cahttps://utcc.utoronto.ca/~cks/space/blog/sysadmin/TarFindingTruncateBugx_refsource_MISC
• git.savannah.gnu.orghttp://git.savannah.gnu.org/cgit/tar.git/commit/?id=c15c42ccd1e2377945fd0414eca1a49294bff454x_refsource_MISC
• lists.debian.org[debian-lts-announce] 20181231 [SECURITY] [DLA 1623-1] tar security updatehttps://lists.debian.org/debian-lts-announce/2018/12/msg00023.htmlmailing-listx_refsource_MLIST
• news.ycombinator.comhttps://news.ycombinator.com/item?id=18745431x_refsource_MISC
• www.securityfocus.com106354http://www.securityfocus.com/bid/106354vdb-entryx_refsource_BID
• security.gentoo.orgGLSA-201903-05https://security.gentoo.org/glsa/201903-05vendor-advisoryx_refsource_GENTOO
• lists.gnu.orghttp://lists.gnu.org/archive/html/bug-tar/2018-12/msg00023.htmlx_refsource_MISC
• twitter.comhttps://twitter.com/thatcks/status/1076166645708668928x_refsource_MISC
• lists.opensuse.orgopenSUSE-SU-2019:1237http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.htmlvendor-advisoryx_refsource_SUSE
• lists.debian.org[debian-lts-announce] 20211128 [SECURITY] [DLA 2830-1] tar security updatehttps://lists.debian.org/debian-lts-announce/2021/11/msg00025.htmlmailing-listx_refsource_MLIST
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html