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Fencer Intel
high 7.4

CVE-2019-3685 json

Missing TLS certificate validation for HTTPS connections in osc

published 7y ago modified 4mo ago also EUVD-2019-13320

cvss
7.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

Open Build Service before version 0.165.4 diddn't validate TLS certificates for HTTPS connections with the osc client binary

Patch / fix

  • Open Build Service Open Build Service 0.165.4
  • osc SLE Software Development Kit 12 SP5 0.182.0-15.12.1
  • osc SLE Module for Development Tools 15 SP1 0.165.4-3.9.1

suse advisories SUSE-SU-2022:4351-1SUSE-SU-2019:2067-1

  • osc openSUSE Tumbleweed 0.174.0-1.2
  • osc openSUSE Leap 15.1 0.165.4-lp151.2.6.1

opensuse advisories openSUSE-SU-2024:11133-1openSUSE-SU-2019:1844-1

Is CVE-2019-3685 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-3685 updated cvss 5.6

osc: ails to adequately verify TLS certificates allowing for a man in the middle attack

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.suse.com https://bugzilla.suse.com/show_bug.cgi?id=1142518 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 7.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Open Build Service Open Build Service

Classification

Weakness
  • CWE-295 Improper Certificate Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.