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ubuntuUbuntuUSN-5720-1
HistoryNov 09, 2022 - 12:00 a.m.

Zstandard vulnerabilities

2022-11-0900:00:00
ubuntu.com
31
zstandard
file permissions
vulnerability
ubuntu 16.04

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%

Releases

  • Ubuntu 16.04 ESM

Packages

  • libzstd - fast lossless compression algorithm

Details

It was discovered that Zstandard was not properly managing file
permissions when generating output files. A local attacker could
possibly use this issue to cause a race condition and gain
unauthorized access to sensitive data.

OSVersionArchitecturePackageVersionFilename
Ubuntu16.04noarchzstd< 1.3.1+dfsg-1~ubuntu0.16.04.1+esm3UNKNOWN
Ubuntu16.04noarchlibzstd1< 1.3.1+dfsg-1~ubuntu0.16.04.1UNKNOWN
Ubuntu16.04noarchlibzstd1-dbgsym< 1.3.1+dfsg-1~ubuntu0.16.04.1UNKNOWN
Ubuntu16.04noarchlibzstd1-dev< 1.3.1+dfsg-1~ubuntu0.16.04.1UNKNOWN
Ubuntu16.04noarchzstd< 1.3.1+dfsg-1~ubuntu0.16.04.1UNKNOWN
Ubuntu16.04noarchzstd-dbgsym< 1.3.1+dfsg-1~ubuntu0.16.04.1UNKNOWN
Ubuntu16.04noarchlibzstd1< 1.3.1+dfsg-1~ubuntu0.16.04.1+esm3UNKNOWN

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%