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ubuntuUbuntuUSN-4872-1
HistoryMar 15, 2021 - 12:00 a.m.

Axel vulnerability

2021-03-1500:00:00
ubuntu.com
20
axel
ubuntu
insecure certificate
impersonation
data theft

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.8

Confidence

High

EPSS

0.003

Percentile

68.9%

Releases

  • Ubuntu 20.04 LTS
  • Ubuntu 18.04 ESM

Packages

  • axel - light command line download accelerator

Details

It was discovered that Axel did not properly verify the certificates for hostnames. An
attacker could use this vulnerability to impersonate another server and obtain
sensitive information.

OSVersionArchitecturePackageVersionFilename
Ubuntu20.04noarchaxel< 2.17.5-1ubuntu1+esm1UNKNOWN
Ubuntu20.04noarchaxel< 2.17.5-1ubuntu1UNKNOWN
Ubuntu20.04noarchaxel-dbgsym< 2.17.5-1ubuntu1UNKNOWN
Ubuntu18.04noarchaxel< 2.16.1-1ubuntu0.1~esm1UNKNOWN
Ubuntu18.04noarchaxel< 2.16.1-1build1UNKNOWN
Ubuntu18.04noarchaxel-dbgsym< 2.16.1-1build1UNKNOWN

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.8

Confidence

High

EPSS

0.003

Percentile

68.9%