How severe is CVE-2019-15795?

CVE-2019-15795 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-15795 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15795?

CVE-2019-15795 primarily affects Ubuntu Python-apt. In total, 66 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-15795?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-15795 published?

CVE-2019-15795 was published on 2020-03-26 and last updated on 2026-06-17.

CVE-2019-15795

CVE-2019-15795 is a medium-severity vulnerability in Ubuntu Python-apt with a CVSS 3.x base score of 4.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-327.

Key facts

Severity: Medium (CVSS 3.x base score 4.7)
CVSS v2: 2.6
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Ubuntu Python-apt
Published: 2020-03-26
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2019-15795?: 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.
How severe is CVE-2019-15795?: CVE-2019-15795 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-15795 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15795?: CVE-2019-15795 primarily affects Ubuntu Python-apt. In total, 66 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-15795?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-15795 published?: CVE-2019-15795 was published on 2020-03-26 and last updated on 2026-06-17.

References

Affected products (66)

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:a:ubuntu:python-apt:0.8.9.1:*:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.8.9.1:ubuntu1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.0:*:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.1:*:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.1:build1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.1:build2:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.1:ubuntu1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.1:*:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.2:*:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.2:ubuntu1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.2:ubuntu2:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.3:*:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.3:ubuntu1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.4:*:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.4:build1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.5:*:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.5:ubuntu1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.5:ubuntu2:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:0.9.3.5:ubuntu3:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:1.0.1:build1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:1.0.1:ubuntu1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:1.0.1:ubuntu2:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:1.1.0:beta1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:1.1.0:beta1build1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:1.1.0:beta1ubuntu0.16.04.1:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:1.1.0:beta1ubuntu0.16.04.2:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:1.1.0:beta1ubuntu0.16.04.3:*:*:*:*:*:*
cpe:2.3:a:ubuntu:python-apt:1.1.0:beta1ubuntu0.16.04.4:*:*:*:*:*:*

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