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CVE-2018-12477· NVD / CVE Program· CNA microfocus

obs-service-refresh_patches can be tricked into deleting '..' or other unrelated directories

A Improper Neutralization of CRLF Sequences vulnerability in Open Build Service allows remote attackers to cause deletion of directories by tricking obs-service-refresh_patches to delete them. Affected releases are openSUSE Open Build Service: versions prior to d6244245dda5367767efc989446fe4b5e4609cce.

HighCVSS 7.5 · v3.0—No exploit Fix available
Published
Oct 9, 2018
Updated
Jun 16, 2026
EPSS
1.2% · 66th percentile
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Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CNA vs NVD score

NVD
7.5
CNA · microfocus
3.5
4.0 point gap

CVSS:3.0/AV:N/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

VendorProduct
opensuseleap

Affected versions

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

  • opensuse leap15.0
  • opensuse leap42.3

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.

  • openSUSE Open Build Service

    • unspecified and later · before d6244245dda5367767efc989446fe4b5e4609cceaffected

Package-level exposure

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

EcosystemPackageAffected rangeFix
openSUSE:Tumbleweedobs-service-refresh_patchesbefore 0.3.9+git.1625238904.d59f20e-1.20.3.9+git.1625238904.d59f20e-1.2

Same product

opensuse: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-0749The smartcard interaction in SPICE allows remote attackers to cause a denial of service (QEMU-KVM process crash) or possibly execute arbitra
    42Plan
  • CVE-2015-8863Off-by-one error in the tokenadd function in jv_parse.c in jq allows remote attackers to cause a denial of service (crash) via a long JSON-e
    41Plan
  • CVE-2019-18903wicked: Use-after-free when receiving invalid DHCP6 IA_PD option
    40Plan
  • CVE-2019-18902wicked: Use-after-free when receiving invalid DHCP6 client options
    40Plan
  • CVE-2016-4007Multiple unspecified vulnerabilities in the obs-service-extract_file package before 0.3-5.1 in openSUSE Leap 42.1 and before 0.3-3.1 in open
    40Plan
  • CVE-2016-3982Off-by-one error in the bmp_rle4_fread function in pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (
    36Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
opensuse:obs-service-refresh_patches0.3.9+git.1625238904.d59f20e-1.2 · openSUSE:TumbleweedPackage 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.

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.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-93 · Improper Neutralization of CRLF Sequences ('CRLF Injection')

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/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.

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 help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records