4.7

CVE-2019-15796: canonical python-apt Improper Authentication

CVSS: 4.7v3.1MediumModified
AliasesGHSA-pj65-3pf6-c5q4UBUNTU-CVE-2019-15796DEBIAN-CVE-2019-15796
Published 26-03-2020Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2019-15796 is a medium (CVSS 4.7) Improper Authentication vulnerability in canonical python-apt. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.2% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.7/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.51%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 2
DLA-2074-1DSA-4609-1USN-4247-1USN-4247-3

Timeline

  1. 26-03-2020
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.51%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

0.00 pp

From 0.51% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.51%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Ubuntu2 products
  • python-apt< 0.9.3.5ubuntu3+esm2 | < 1.1.0~beta1ubuntu0.16.04.7 | < 1.6.5ubuntu0.1
  • python-apt0.8.0:ubuntu9 | 0.8.1:ubuntu1 | 0.8.3:ubuntu1 | 0.8.3:ubuntu2 | 0.8.3:ubuntu3 | 0.8.3:ubuntu4 | 0.8.3:ubuntu5 | 0.8.3:ubuntu6 | 0.8.3:ubuntu7 | 0.8.3:ubuntu7.1 | 0.8.3:ubuntu7.2 | 0.8.3:ubuntu7.3 | 0.8.9.1 | 0.8.9.1:ubuntu1 | 0.9.0 | 0.9.1 | 0.9.1:build1 | 0.9.1:build2 | 0.9.1:ubuntu1 | 0.9.3.1 | 0.9.3.2 | 0.9.3.2:ubuntu1 | 0.9.3.2:ubuntu2 | 0.9.3.3 | 0.9.3.3:ubuntu1 | 0.9.3.4 | 0.9.3.4:build1 | 0.9.3.5 | 0.9.3.5:ubuntu1 | 0.9.3.5:ubuntu2 | 0.9.3.5:ubuntu3 | 1.0.1:build1 | 1.0.1:ubuntu1 | 1.0.1:ubuntu2 | 1.1.0:beta1 | 1.1.0:beta1build1 | 1.1.0:beta1ubuntu0.16.04.1 | 1.1.0:beta1ubuntu0.16.04.2 | 1.1.0:beta1ubuntu0.16.04.3 | 1.1.0:beta1ubuntu0.16.04.4 | 1.1.0:beta1ubuntu0.16.04.5 | 1.4.0 | 1.4.0:beta3build2 | 1.4.0:beta3ubuntu1 | 1.6.0 | 1.6.0:rc1 | 1.6.0:rc2ubuntu1 | 1.6.0:rc2ubuntu2 | 1.6.0:rc3 | 1.6.1 | 1.6.2 | 1.6.3 | 1.6.3:ubuntu1 | 1.6.4 | 1.8.4 | 1.9.0:alpha0\~ubuntu1 | 1.9.0:alpha0\~ubuntu2 | 1.9.0:ubuntu1 | 1.7.0 | 1.8.0 | 1.8.0:alpha0\~ubuntu1 | 1.8.0:alpha0\~ubuntu2 | 1.8.1 | 1.8.2 | 1.8.3
Canonical1 product
  • python-apt≥ 0.8.3, < 0.8.3ubuntu7.5 | ≥ 0.9.3.5, < 0.9.3.5ubuntu3+esm2 | ≥ 1.1.0, < 1.1.0~beta1ubuntu0.16.04.7 | ≥ 1.6.5, < 1.6.5ubuntu0.1 | ≥ 1.9.0, < 1.9.0ubuntu1.2 | ≥ 1.9.5, < 1.9.5
PyPI1 product
  • python-apt< 0.8.3ubuntu7.5 | ≥ 0.9.0, < 0.9.3.5ubuntu3 | ≥ 1.2.0, < 1.6.5ubuntu0.1 | ≥ 1.7.0, < 1.9.0ubuntu1.2 | ≥ 1.9.1, < 1.9.5

4 vendors · 6 products

References

11 links
Show all 11 references