Ubuntu kernel snap build process could use unauthenticated sources

published 2020-04-14 6y ago modified 2026-06-17 4mo ago also EUVD-2019-3153

cvss: 8.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits: 0; none known

The pc-kernel snap build process hardcoded the --allow-insecure-repositories and --allow-unauthenticated apt options when creating the build chroot environment. This could allow an attacker who is able to perform a MITM attack between the build environment and the Ubuntu archive to install a malicious package within the build chroot. This issue affects pc-kernel versions prior to and including 2019-07-16

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Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

bugs.launchpad.net https://bugs.launchpad.net/bugs/1836041 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.4	CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.8	AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

Canonical pc-kernel

Classification

Weakness

CWE-353 Missing Support for Integrity Check
CWE-345 Insufficient Verification of Data Authenticity

References

bugs.launchpad.net /bugs/1836041
exploit, issue-tracking, third-party-advisory
cve.mitre.org /cgi-bin/cvename.cgi?name=CVE-2019-11480
third-party-advisory

Sources

CVE List CVE-2019-11480
NVD CVE-2019-11480

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