Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2019-15796

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
26/03/2020
Last modified:
19/10/2020

Description

Python-apt doesn't check if hashes are signed in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py or in `_fetch_archives()` of apt/cache.py in version 1.9.3ubuntu2 and earlier. This allows downloads from unsigned repositories which shouldn't be allowed and has been fixed in verisions 1.9.5, 1.9.0ubuntu1.2, 1.6.5ubuntu0.1, 1.1.0~beta1ubuntu0.16.04.7, 0.9.3.5ubuntu3+esm2, and 0.8.3ubuntu7.5.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Changed
Confidentiality (C): Low
Integrity (I): Low
Availability (A): None

Base Score 3.x
4.70
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:H/Au:N/C:N/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 2.60 LOW
Vector: AV:N/AC:H/Au:N/C:N/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Authentication (Au): None
Confidentiality (C): None
Integrity (I): Physical
Availability (A): None

Base Score 2.0
2.60
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:ubuntu:python-apt:0.8.0:ubuntu9:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.1:ubuntu1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu2:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu3:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu4:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu5:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu6:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu7:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu7.1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu7.2:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu7.3:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.9.1:*:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.9.1:ubuntu1:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools