Vulnerability Monitor

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CVE-2021-20193

A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

Published

2021-03-26T17:15:12.843

Last Modified

2025-05-05T14:15:04.557

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 3.3 (LOW)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-401
Type: Primary
CWE-125
CWE-401

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnu	tar	≤ 1.33	Yes

References

https://bugzilla.redhat.com/show_bug.cgi?id=1917565 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://git.savannah.gnu.org/cgit/tar.git/commit/?id=d9d4435692150fa8ff68e1b1a473d187cc3fd777 Mailing List, Patch, Third Party Advisory ([email protected])
https://savannah.gnu.org/bugs/?59897 Issue Tracking, Patch, Vendor Advisory ([email protected])
https://security.gentoo.org/glsa/202105-29 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1917565 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://git.savannah.gnu.org/cgit/tar.git/commit/?id=d9d4435692150fa8ff68e1b1a473d187cc3fd777 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://savannah.gnu.org/bugs/?59897 Issue Tracking, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202105-29 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)