Static temporary filename allows overwriting of files
Supportutils, before version 3.1-5.7.1, wrote data to static file /tmp/supp_log, allowing local attackers to overwrite files on systems without symlink protection
- Published
- Mar 5, 2019
- Updated
- Jun 16, 2026
- EPSS
- 0.5% · 37th percentile
- CWE
- CWE-377
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CNA vs NVD score
- NVD
- 5.5
- CNA · microfocus
- 2.8
- 2.7 point gap
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| opensuse | supportutils | cpe:2.3:a:opensuse:supportutils |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- opensuse supportutilsbefore 3.1-5.7.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (microfocus). Independent of NVD's CPE analysis and usually ahead of it.
SUSE supportutils
- unspecified and later · before 3.1-5.7.1affected
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| openSUSE:Tumbleweed | supportutils | before 3.1.17-2.2 | 3.1.17-2.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 | supportutils | before 3.1-5.7.1 | 3.1-5.7.1 |
| SUSE:OpenStack Cloud 7 | hostinfo | before 1.0.1-19.5.1 | 1.0.1-19.5.1 |
| SUSE:OpenStack Cloud 7 | supportutils | before 3.0-95.21.1 | 3.0-95.21.1 |
Same product
opensuse: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-19639Code execution if run with command line switch -v31Monitor
- CVE-2018-19636Local root exploit via inclusion of attacker controlled shell script31Monitor
- CVE-2018-19640Code execution if run with command line switch -v22Monitor
- CVE-2018-19638User can overwrite arbitrary log files in support tar18Monitor
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:supportutils | 3.1.17-2.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| suse:hostinfo | 1.0.1-19.5.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:supportutils | 3.1-5.7.1 · SUSE:Linux Enterprise Module for Basesystem 15 | 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.
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 researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
- Vítězslav ČížekSUSE
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
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- high · data or configuration can be modified
- Availability
- none
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- High
- Availability impact
- None
Weakness class (CWE)
CWE-377 · Insecure Temporary FileCVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
nvd-primary
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
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- lists.opensuse.org/opensuse-security-announce/2019-05/msg00018.html
- bugzilla.suse.com/show_bug.cgi?id=1117776
Vendor advisories and official records. Exploit/PoC links are deliberately left out.