python-apt uses MD5 for validation
Published Mar 26, 2020
4.7
MEDIUMCVSS 3.1
EPSS 0.45%
Description
python-apt only checks the MD5 sums of downloaded files in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py in version 1.9.0ubuntu1 and earlier. This allows a man-in-the-middle attack which could potentially be used to install altered packages and has been fixed in versions 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.
Affected products
-
- Version 0.8.3StatusaffectedConstraints<0.8.3ubuntu7.5
- Version 0.9.3.5StatusaffectedConstraints<0.9.3.5ubuntu3+esm2
- Version 1.1.0StatusaffectedConstraints<1.1.0~beta1ubuntu0.16.04.7
- Version 1.6.5StatusaffectedConstraints<1.6.5ubuntu0.1
- Version 1.9.0StatusaffectedConstraints<1.9.0ubuntu1.2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Canonical | Python-apt | n/a |
|
Configuration 1
- 0.8.0
- 0.8.1
- 0.8.3
- 0.8.3
- 0.8.3
- 0.8.3
- 0.8.3
- 0.8.3
- 0.8.3
- 0.8.3
- 0.8.3
- 0.8.3
Running on/with
- 12.04
Configuration 2
- 0.8.9.1
- 0.8.9.1
- 0.9.0
- 0.9.1
- 0.9.1
- 0.9.1
- 0.9.1
- 0.9.3.1
- 0.9.3.2
- 0.9.3.2
- 0.9.3.2
- 0.9.3.3
- 0.9.3.3
- 0.9.3.4
- 0.9.3.4
- 0.9.3.5
- 0.9.3.5
- 0.9.3.5
- 0.9.3.5
Running on/with
- 14.04
Configuration 3
- 1.0.1
- 1.0.1
- 1.0.1
- 1.1.0
- 1.1.0
- 1.1.0
- 1.1.0
- 1.1.0
- 1.1.0
- 1.1.0
Running on/with
- 16.04
Configuration 4
- 1.8.4
- 1.4.0
- 1.4.0
- 1.4.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.0
- 1.6.1
- 1.6.2
- 1.6.3
- 1.6.3
- 1.6.4
- 1.8.4
Running on/with
- 18.04
Configuration 5
- 1.8.4
- 1.9.0
- 1.9.0
- 1.9.0
Running on/with
- 19.10
Configuration 6
- 1.7.0
- 1.8.0
- 1.8.0
- 1.8.0
- 1.8.1
- 1.8.2
- 1.8.3
- 1.8.4
Running on/with
- 19.04
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:H/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2021-2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (11 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.45% (0.00451) | 36.96th | v5 (v2026.06.15) |
| Sep 20, 2026 | 0.45% (0.00451) | 38.53th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.06% (0.00058) | 25.31th | v3 (v2023.03.01) |
| Jun 6, 2024 | 0.06% (0.00058) | 24.58th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00058) | 22.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Mar 31, 2022 | 2.56% (0.02561) | 62.63th | v2 (v2022.01.01) |
| Jan 6, 2022 | 2.74% (0.02742) | 62.72th | v1 |
| Jan 5, 2022 | 0.62% (0.00624) | 46.35th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.62% (0.00624) | 0.00th | v1 |
References (4)
- https://github.com/advisories/GHSA-rp8m-h266-53jh Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-15795
- https://usn.ubuntu.com/4247-1/ vendor-advisoryx_refsource_UBUNTUPatchVendor Advisory
- https://usn.ubuntu.com/4247-3/ vendor-advisoryx_refsource_UBUNTUPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-rp8m-h266-53jh | Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-15795 | ||
| https://usn.ubuntu.com/4247-1/ | vendor-advisoryx_refsource_UBUNTUPatchVendor Advisory | |
| https://usn.ubuntu.com/4247-3/ | vendor-advisoryx_refsource_UBUNTUPatchVendor Advisory |
Change history (0)
No recorded changes yet.