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ubuntuUbuntuUSN-5291-1
HistoryFeb 17, 2022 - 12:00 a.m.

libarchive vulnerabilities

2022-02-1700:00:00
ubuntu.com
86

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.4 High

AI Score

Confidence

High

0.005 Low

EPSS

Percentile

77.3%

Releases

  • Ubuntu 21.10
  • Ubuntu 20.04 LTS

Packages

  • libarchive - Library to read/write archive files

Details

It was discovered that libarchive incorrectly handled symlinks. If a
user or automated system were tricked into processing a specially crafted
archive, an attacker could possibly use this issue to change modes, times,
ACLs, and flags on arbitrary files. (CVE-2021-23177, CVE-2021-31566)

It was discovered that libarchive incorrectly handled certain RAR archives.
If a user or automated system were tricked into processing a specially
crafted RAR archive, an attacker could use this issue to cause libarchive
to crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2021-36976)

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.4 High

AI Score

Confidence

High

0.005 Low

EPSS

Percentile

77.3%