CVE-2019-3685· NVD / CVE Program· CNA suse

Missing TLS certificate validation for HTTPS connections in osc

Noroxi assessment

Priority: Monitor (action score 30/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.71% (FIRST EPSS); higher than 53.1% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
Fixed version: osc (openSUSE:Leap 15.1) 0.165.4-lp151.2.6.1; osc (openSUSE:Tumbleweed) 0.174.0-1.2; osc (SUSE:Linux Enterprise Module for Development Tools 15 SP1) 0.165.4-3.9.1.

Low priority for now. Upgrade to osc (openSUSE:Leap 15.1) 0.165.4-lp151.2.6.1; osc (openSUSE:Tumbleweed) 0.174.0-1.2; osc (SUSE:Linux Enterprise Module for Development Tools 15 SP1) 0.165.4-3.9.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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

HighCVSS 7.7 · v3.1—No exploit Fix available

Published: Nov 5, 2019
Updated: Jun 16, 2026
EPSS: 0.7% · 53th percentile
CWE: CWE-295

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.7%

CNA vs NVD score

NVD: 7.7
CNA · suse: 7.4; 0.3 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
opensuse	open build service	cpe:2.3:a:opensuse:open_build_service

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This vulnerability is about certificate validation or weak cryptography. The free SSL checker tests your certificate, enabled TLS versions and weak ciphers.

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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

opensuse open build servicebefore 0.165.4

Versions reported by the vendor

Affected version ranges reported by the assigning authority (suse). Independent of NVD's CPE analysis and usually ahead of it.

Open Build Service Open Build Service
- unspecified and later · before 0.165.4affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
openSUSE:Leap 15.1	osc	before 0.165.4-lp151.2.6.1	0.165.4-lp151.2.6.1
openSUSE:Tumbleweed	osc	before 0.174.0-1.2	0.174.0-1.2
SUSE:Linux Enterprise Module for Development Tools 15 SP1	osc	before 0.165.4-3.9.1	0.165.4-3.9.1
SUSE:Linux Enterprise Software Development Kit 12 SP5	osc	before 0.182.0-15.12.1	0.182.0-15.12.1

Same product

opensuse: all records

Other highest-scoring records for the same primary product.

CVE-2014-0593sed command injection
40Plan
CVE-2011-4183open build service allows anyone to upload rpms
39Monitor
CVE-2022-21949Multiple XXE vulnerabilities in OBS
36Monitor

Published before and after this one in the same product

← EarlierCVE-2018-12478Oct 9, 2018 · obs-service-replace_using_package_version allows to specify arbitrary input files
26Monitor
← EarlierCVE-2018-12479Oct 9, 2018 · Request controller allows to create requests with arbitrary request IDs
31Monitor
Later →CVE-2020-8020May 13, 2020 · Persistent XSS in markdown parser used by obs-server
24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
opensuse:osc	0.165.4-lp151.2.6.1 · openSUSE:Leap 15.1	Package registry (OSV)
suse:osc	0.165.4-3.9.1 · SUSE:Linux Enterprise Module for Development Tools 15 SP1	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Wolfgang FrischSUSE

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
Special conditions such as timing or configuration are required.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: low · the service can be disrupted

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: Low

Weakness class (CWE)

CWE-295 · Improper Certificate Validation

CVSS vector

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

nvd-primary

Root cause

A certificate validation error is silently swallowed instead of terminating the connection. Often, code added for a test environment makes its way into production.

The bug in code

The whole CWE-295 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

kotlin

1override fun checkServerTrusted(chain: Array<X509Certificate>, type: String) {
2  // Left empty for the test environment
3}

Fixed

kotlin

1val client = OkHttpClient.Builder()
2  .certificatePinner(
3    CertificatePinner.Builder()
4      .add("api.sirius.example", "sha256/…")
5      .build()
6  ).build()

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:46 PM UTC

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