CVE-2019-3681: osc: stores downloaded (supposed) RPM in network-controlled filesystem paths

Distribution release	Source package	Vendor state	Fixed version	Evidence
Debian trixietrixie · source	`osc`	Vendor fix publishedDebian records a fixed source-package version for this release.	`0.169.1-1`	Debian Security Tracker ↗Source updated 23 Oct 2026
Debian bookwormbookworm · source	`osc`	Vendor fix publishedDebian records a fixed source-package version for this release.	`0.169.1-1`	Debian Security Tracker ↗Source updated 23 Oct 2026
Debian forkyforky · source	`osc`	Vendor fix publishedDebian records a fixed source-package version for this release.	`0.169.1-1`	Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · source	`osc`	Vendor fix publishedDebian records a fixed source-package version for this release.	`0.169.1-1`	Debian Security Tracker ↗Source updated 23 Oct 2026
Ubuntu 24.04 LTSnoble · standard archive	`osc`	Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.	`Not published in this feed`	Canonical Ubuntu Security ↗Source updated 23 Oct 2026

Recommended actionWithin 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified

What, why and how

A External Control of File Name or Path vulnerability in osc of SUSE Linux Enterprise Module for Development Tools 15, SUSE Linux Enterprise Software Development Kit 12-SP5, SUSE Linux Enterprise Software Development Kit 12-SP4; openSUSE Leap 15.1, openSUSE Factory allowed remote attackers that can change downloaded packages to overwrite arbitrary files. This issue affects: SUSE Linux Enterprise Module for Development Tools 15 osc versions prior to 0.169.1-3.20.1. SUSE Linux Enterprise Software Development Kit 12-SP5 osc versions prior to 0.162.1-15.9.1. SUSE Linux Enterprise Software Development Kit 12-SP4 osc versions prior to 0.162.1-15.9.1. openSUSE Leap 15.1 osc versions prior to 0.169.1-lp151.2.15.1. openSUSE Factory osc versions prior to 0.169.0 .

What

Why

The product allows user input to control or influence paths or file names that are used in filesystem operations.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

The product allows user input to control or influence paths or file names that are used in filesystem operations.

How

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material

Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.

Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path: a network path → External Control of File Name or Path → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Network
Privileges required: None: unauthenticated exploitation is possible
User interaction: Required interaction required
Attack complexity: High: exploitation depends on specific conditions
Security boundary: Unchanged: impact remains within the vulnerable component's security authority
Weakness ? CWE means Common Weakness Enumeration: a standard category for the underlying weakness.: CWE-73 ↗
CWE-73: External Control of File Name or Path. The product allows user input to control or influence paths or file names that are used in filesystem operations.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land: No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.

NetworkUnauthenticatedCWE-73Public exploit reference

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2019-13316Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

Cyber Security Agency of Singapore · English · CSA-SB-20200701Security Bulletin 01 Jul 2020

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 01 Jul 2020, published on 1 July 2020. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2019-015754osc におけるファイル名やパス名の外部制御に関する脆弱性

osc には、ファイル名やパス名の外部制御に関する脆弱性が存在します。

Official advisory ↗

Patch and workaround

Operational remediation based on structured source evidence.

Status ? Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.: Fix not verified
Affected: SUSE Linux Enterprise Module for Development Tools 15: osc < 0.169.1-3.20.1
SUSE Linux Enterprise Software Development Kit 12-SP5: osc < 0.162.1-15.9.1
SUSE Linux Enterprise Software Development Kit 12-SP4: osc < 0.162.1-15.9.1
openSUSE Leap 15.1: osc < 0.169.1-lp151.2.15.1
openSUSE Factory: osc < 0.169.0
Fixed: No fixed version is explicitly recorded in the structured CVE data.
Action: No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround: No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.

Evidence and provenance

Published 29 Jun 2020 · Last source change 17 Sept 2024, 03:28 UTC · CWE-73 · External Control of File Name or Path

CVE recordCVE.org · 5.1

CVSS sourceCNA

EPSS source

The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.

FIRST · tracked since 2026-08-14

European sourceENISA EUVD · EUVD-2019-13316

Product sourceCNA

Remediation sourceCVE/CNA references

CWE sourceCNA

NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

2020-06-29CVE published

ENISA EUVD · EUVD-2019-13316↗Public exploit reference↗Official CVE record (CNA and ADP data)↗NVD record↗

Technical terms and abbreviations used in this report

CVE: Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS: Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS: Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE: Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA: CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP: Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD: National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT: A computer security incident response team that publishes warnings or coordinates incident response.
PoC: Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF: Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL: Living off the land: abuse of legitimate tools or system functions during an attack.

osc: stores downloaded (supposed) RPM in network-controlled filesystem paths

Published severity in operational context

Evidence used

Compensating controls

Verification

Release-specific package status

National CERT insights
?
CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

ENISA European Vulnerability Database

EUVD-2019-13316