Varnish 3.x before 3.0.7, when used in certain stacked installations, allows remote…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
Varnish 3.x before 3.0.7, when used in certain stacked installations, allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a header line terminated by a \r (carriage return) character in conjunction with multiple Content-Length headers in an HTTP request.
Why it matters now
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 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.0:beta1:*:*:*:*:*:* | 3.0.0 beta1 | Vulnerable | Varnish Cache Project |
| cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.0:beta2:*:*:*:*:*:* | 3.0.0 beta2 | Vulnerable | Varnish Cache Project |
| cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.1:*:*:*:*:*:*:* | 3.0.1 | Vulnerable | Varnish Cache Project |
| cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.2:*:*:*:*:*:*:* | 3.0.2 | Vulnerable | Varnish Cache Project |
| cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.3:*:*:*:*:*:*:* | 3.0.3 | Vulnerable | Varnish Cache Project |
| cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.4:*:*:*:*:*:*:* | 3.0.4 | Vulnerable | Varnish Cache Project |
| cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.5:*:*:*:*:*:*:* | 3.0.5 | Vulnerable | Varnish Cache Project |
| cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.6:*:*:*:*:*:*:* | 3.0.6 | Vulnerable | Varnish Cache Project |
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Debian |
- cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.0:beta1:*:*:*:*:*:* Versions 3.0.0 beta1 Vulnerable ·Varnish Cache Project
- cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.0:beta2:*:*:*:*:*:* Versions 3.0.0 beta2 Vulnerable ·Varnish Cache Project
- cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.1:*:*:*:*:*:*:* Versions 3.0.1 Vulnerable ·Varnish Cache Project
- cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.2:*:*:*:*:*:*:* Versions 3.0.2 Vulnerable ·Varnish Cache Project
- cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.3:*:*:*:*:*:*:* Versions 3.0.3 Vulnerable ·Varnish Cache Project
- cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.4:*:*:*:*:*:*:* Versions 3.0.4 Vulnerable ·Varnish Cache Project
- cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.5:*:*:*:*:*:*:* Versions 3.0.5 Vulnerable ·Varnish Cache Project
- cpe:2.3:a:varnish_cache_project:varnish_cache:3.0.6:*:*:*:*:*:*:* Versions 3.0.6 Vulnerable ·Varnish Cache Project
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2015-8852
- 2026-10-03 Alias added: GHSA-rgw4-jfff-qx3m
References
Advisory 4
Other 4
- [oss-security] 20160418 Re: CVE request: Varnish 3 before 3.0.7 was vulnerable to HTTP Smuggling issues: Double Content Length and bad EOL
- https://github.com/varnish/Varnish-Cache/commit/29870c8fe95e4e8a672f6f28c5fbe692bea09e9c
- https://github.com/varnish/Varnish-Cache/commit/85e8468bec9416bd7e16b0d80cb820ecd2b330c3
- [oss-security] 20160416 CVE request: Varnish 3 before 3.0.7 was vulnerable to HTTP Smuggling issues: Double Content Length and bad EOL
Sources
- CVE-2015-8852 · CVE Program
- CVE-2015-8852 · NVD
- FIRST EPSS
- GHSA-rgw4-jfff-qx3m · GitHub Advisory Database · CC BY 4.0
- CVE-2015-8852 · Red Hat security data · CC BY 4.0
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