Dulwich before 0.18.5, when an SSH subprocess is used, allows remote attackers to execute…
Priority MEDIUM 49Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 1 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat.
Summary
Dulwich before 0.18.5, when an SSH subprocess is used, allows remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, a related issue to CVE-2017-9800, CVE-2017-12836, CVE-2017-12976, CVE-2017-1000116, and CVE-2017-1000117.
Why it matters now
EPSS 0.03809 90th percentileScored 2026-11-07
Fix Partial dulwich (PyPI): 0.18.5Red Hat: 1 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | dulwich (PyPI) | before 0.18.5 | 0.18.5 | Patch available | GHSA-cwwh-4382-6fwr |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- dulwich (PyPI) Vendor— Affected before 0.18.5 Fixed in 0.18.5 Patch available GHSA-cwwh-4382-6fwr
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:dulwich_project:dulwich:*:*:*:*:*:*:*:* | up to 0.18.4 | Vulnerable | Dulwich Project |
- cpe:2.3:a:dulwich_project:dulwich:*:*:*:*:*:*:*:* Versions up to 0.18.4 Vulnerable ·Dulwich Project
Remediation
- Fix · GHSA-cwwh-4382-6fwr dulwich (PyPI) Fixed in 0.18.5 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenStack Platform 11 (Ocata) | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-16228
- 2026-10-03 Alias added: GHSA-cwwh-4382-6fwr
- 2026-11-06 EPSS moved to the 90th–95th percentile
References
Advisory 3
Other 7
- https://github.com/jelmer/dulwich/commit/7116a0cbbda571f7dac863f4b1c00b6e16d6d8d6
- https://github.com/jelmer/dulwich
- https://github.com/pypa/advisory-database/tree/main/vulns/dulwich/PYSEC-2017-12.yaml
- https://web.archive.org/web/20201220231743/https://www.dulwich.io/code/dulwich/commit/7116a0cbbda571f7dac863f4b1c00b6e16d6d8d6
- https://web.archive.org/web/20210128154006/https://www.dulwich.io/code/dulwich
- https://www.dulwich.io/code/dulwich
- https://www.dulwich.io/code/dulwich/commit/7116a0cbbda571f7dac863f4b1c00b6e16d6d8d6
More Dulwich Project Dulwich vulnerabilities
- TI-2014-07891 The build_index_from_tree function in index.py in Dulwich before 0.9.9 allows remote… CVSS 2.0HIGH 7.5
- TI-2015-00779 Buffer overflow in the C implementation of the apply_delta function in _pack.c in Dulwich… CVSS 2.0HIGH 7.5
Sources
- CVE-2017-16228 · CVE Program
- CVE-2017-16228 · NVD
- FIRST EPSS
- GHSA-cwwh-4382-6fwr · GitHub Advisory Database · CC BY 4.0
- CVE-2017-16228 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences