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CVE-2019-15796

Publication date 20 January 2020

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

4.7 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
python-apt 19.10 eoan
Fixed 1.9.0ubuntu1.2
19.04 disco
Fixed 1.8.5~ubuntu0.2
18.04 LTS bionic
Fixed 1.6.5ubuntu0.1
16.04 LTS xenial
Fixed 1.1.0~beta1ubuntu0.16.04.7
14.04 LTS trusty

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Notes

mdeslaur

this requires a fix in aptdaemon also

Severity score breakdown

Parameter Value
Base score 4.7 · Medium
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Scope Changed
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-4247-3
    • python-apt vulnerabilities
    • 23 January 2020
    • USN-4247-1
    • python-apt vulnerabilities
    • 22 January 2020

Other references