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ubuntucveUbuntu.comUB:CVE-2021-42375
HistoryNov 15, 2021 - 12:00 a.m.

CVE-2021-42375

2021-11-1500:00:00
ubuntu.com
ubuntu.com
19
busybox
ash applet
denial of service

CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

14.2%

JSON

An incorrect handling of a special element in Busybox’s ash applet leads to
denial of service when processing a crafted shell command, due to the shell
mistaking specific characters for reserved characters. This may be used for
DoS under rare conditions of filtered command input.

Notes

Author Note
mdeslaur 1.33.1 only

Related

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ibm 1
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CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

14.2%

JSON
Related for UB:CVE-2021-42375
alpinelinux1debiancve1cnvd1nvd1redhatcve1osv1cve1veracode1prion1cvelist1openvas6thn1fedora2gentoo1nessus6ics3suse1ibm1avleonov1