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CVE-2019-15796

19
FAUCET Score

CVE-2019-15796 describes a vulnerability in Python-apt versions 1.9.3ubuntu2 and earlier, affecting Canonical and Debian distributions of Python-apt and Ubuntu Linux. The flaw allows downloads from unsigned repositories due to a lack of signature verification in specific functions, enabling a remote attacker to potentially deliver malicious packages. Rated Medium (CVSS 4.7), this vulnerability requires user interaction and high attack complexity, with potential for limited confidentiality and integrity impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion, and it is not listed on the CISA KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
0.8.0CPE matchmatch criteria
cpe:2.3:a:ubuntu:python-apt:0.8.0:ubuntu9:*:*:*:*:*:*
0.8.1CPE matchmatch criteria
cpe:2.3:a:ubuntu:python-apt:0.8.1:ubuntu1:*:*:*:*:*:*
0.8.3CPE matchmatch criteria
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu1:*:*:*:*:*:*
0.8.3CPE matchmatch criteria
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu2:*:*:*:*:*:*
0.8.3CPE matchmatch criteria
cpe:2.3:a:ubuntu:python-apt:0.8.3:ubuntu3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
39.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 57th percentile among its peer group of 705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

pippatch availablevia ghsa
Product: python-aptFixed in: 0.8.3ubuntu7.5
pippatch availablevia ghsa
Product: python-aptFixed in: 0.9.3.5ubuntu3
pippatch availablevia ghsa
Product: python-aptFixed in: 1.6.5ubuntu0.1
pippatch availablevia ghsa
Product: python-aptFixed in: 1.9.0ubuntu1.2
pippatch availablevia ghsa
Product: python-aptFixed in: 1.9.5

Vendor Advisories (1)

pipGHSA-pj65-3pf6-c5q4medium

python-apt Does Not Check Hash Signature

May 24, 2022

References

usn.ubuntu.com / 4247-1
PatchThird Party Advisory
usn.ubuntu.com / 4247-3
PatchThird Party Advisory