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ubuntuUbuntuUSN-4760-1
HistoryMar 08, 2021 - 12:00 a.m.

libzstd vulnerabilities

2021-03-0800:00:00
ubuntu.com
112
ubuntu 20.10
ubuntu 20.04 lts
ubuntu 18.04 esm
libzstd
compression algorithm
file permissions
local attacker
unix

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.5

Confidence

High

EPSS

0.001

Percentile

26.6%

JSON

Releases

  • Ubuntu 20.10
  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM

Packages

  • libzstd - fast lossless compression algorithm

Details

It was discovered that libzstd incorrectly handled file permissions. A
local attacker could possibly use this issue to access certain files,
contrary to expectations.

OSVersionArchitecturePackageVersionFilename
Ubuntu20.10noarchlibzstd1< 1.4.5+dfsg-4ubuntu0.1UNKNOWN
Ubuntu20.10noarchlibzstd-dev< 1.4.5+dfsg-4ubuntu0.1UNKNOWN
Ubuntu20.10noarchlibzstd1-dbgsym< 1.4.5+dfsg-4ubuntu0.1UNKNOWN
Ubuntu20.10noarchlibzstd1-udeb< 1.4.5+dfsg-4ubuntu0.1UNKNOWN
Ubuntu20.10noarchzstd< 1.4.5+dfsg-4ubuntu0.1UNKNOWN
Ubuntu20.10noarchzstd-dbgsym< 1.4.5+dfsg-4ubuntu0.1UNKNOWN
Ubuntu20.04noarchlibzstd1< 1.4.4+dfsg-3ubuntu0.1UNKNOWN
Ubuntu20.04noarchlibzstd-dev< 1.4.4+dfsg-3ubuntu0.1UNKNOWN
Ubuntu20.04noarchlibzstd1-dbgsym< 1.4.4+dfsg-3ubuntu0.1UNKNOWN
Ubuntu20.04noarchlibzstd1-udeb< 1.4.4+dfsg-3ubuntu0.1UNKNOWN
Rows per page:
1-10 of 191

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Insecure File Permission
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CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.5

Confidence

High

EPSS

0.001

Percentile

26.6%

JSON
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