CVE-2016-5386: The net/http package in Go through 1.6 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not…
Noroxi assessment
Priority: Monitor (action score 34/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 5.2% (FIRST EPSS); higher than 92.6% of all records.
- Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
- Fixed version: stdlib (Go) 1.6.3; go (openSUSE:Tumbleweed) 1.17-1.1; go1.10 (openSUSE:Tumbleweed) 1.10.8-8.2.
Low priority for now. Upgrade to stdlib (Go) 1.6.3; go (openSUSE:Tumbleweed) 1.17-1.1; go1.10 (openSUSE:Tumbleweed) 1.10.8-8.2 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
The net/http package in Go through 1.6 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect CGI applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect a CGI application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue.
- Published
- Jul 18, 2016
- Updated
- Jun 16, 2026
- EPSS
- 5.2% · 92th percentile
- CWE
- CWE-284
Report tools
Action score
34
Low priority for now.
- CVSS
- 32 / 40 · 8.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 2 / 30 · 5.2%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
| oracle | linux | cpe:2.3:o:oracle:linux |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux server aus | cpe:2.3:o:redhat:enterprise_linux_server_aus |
| redhat | enterprise linux server eus | cpe:2.3:o:redhat:enterprise_linux_server_eus |
| golang | go | cpe:2.3:a:golang:go |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- fedoraproject fedora23
- fedoraproject fedora24
- golang go1.0 and later · before 1.6.3
- golang go1.7
- oracle linux7
- redhat enterprise linux server7.0
- redhat enterprise linux server aus7.2
- redhat enterprise linux server eus7.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Go | stdlib | before 1.6.3 | 1.6.3 |
| openSUSE:Tumbleweed | go | before 1.17-1.1 | 1.17-1.1 |
| openSUSE:Tumbleweed | go1.10 | before 1.10.8-8.2 | 1.10.8-8.2 |
| openSUSE:Tumbleweed | go1.11 | before 1.11.13-10.5 | 1.11.13-10.5 |
| openSUSE:Tumbleweed | go1.12 | before 1.12.17-4.8 | 1.12.17-4.8 |
| openSUSE:Tumbleweed | go1.4 | before 1.4.3-12.2 | 1.4.3-12.2 |
| openSUSE:Tumbleweed | go1.9 | before 1.9.7-11.2 | 1.9.7-11.2 |
| Red Hat:enterprise_linux:7::server | golang | before 0:1.6.3-1.el7_2.1 | 0:1.6.3-1.el7_2.1 |
| Red Hat:enterprise_linux:7::server | golang-bin | before 0:1.6.3-1.el7_2.1 | 0:1.6.3-1.el7_2.1 |
| Red Hat:enterprise_linux:7::server | golang-docs | before 0:1.6.3-1.el7_2.1 | 0:1.6.3-1.el7_2.1 |
| Red Hat:enterprise_linux:7::server | golang-misc | before 0:1.6.3-1.el7_2.1 | 0:1.6.3-1.el7_2.1 |
| Red Hat:enterprise_linux:7::server | golang-src | before 0:1.6.3-1.el7_2.1 | 0:1.6.3-1.el7_2.1 |
| Red Hat:enterprise_linux:7::server | golang-tests | before 0:1.6.3-1.el7_2.1 | 0:1.6.3-1.el7_2.1 |
| SUSE:Package Hub 12 | go | before 1.6.1-6.1 | 1.6.1-6.1 |
| SUSE:Package Hub 12 | go1.4 | before 1.4.3-6.1 | 1.4.3-6.1 |
Same product
fedoraproject: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-1111DHCP packages in Red Hat Enterprise Linux 6 and 7, Fedora 28, and earlier are vulnerable to a command injection flaw in the NetworkManager…59Plan
- CVE-2024-24576Rusts's `std::process::Command` did not properly escape arguments of batch files on Windows46Plan
- CVE-2016-7167Multiple integer overflows in the (1) curl_escape, (2) curl_easy_escape, (3) curl_unescape, and (4) curl_easy_unescape functions in libcurl…43Plan
Published before and after this one in the same product
- ← EarlierCVE-2016-3096Jun 3, 2016 · The create_script function in the lxc_container module in Ansible before 1.9.6-1 and 2.x before 2.0.2.0 allows local users to write to…31Monitor
- ← EarlierCVE-2016-3720Jun 10, 2016 · XML external entity (XXE) vulnerability in XmlMapper in the Data format extension for Jackson (aka jackson-dataformat-xml) allows attackers…40Plan
- Later →CVE-2016-5384Aug 12, 2016 · fontconfig before 2.12.1 does not validate offsets, which allows local users to trigger arbitrary free calls and consequently conduct…31Monitor
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 |
|---|---|---|
| Go:stdlib | 1.6.3 | Package registry (OSV) |
| opensuse:go | 1.17-1.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:go1.10 | 1.10.8-8.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:go1.11 | 1.11.13-10.5 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:go1.12 | 1.12.17-4.8 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:go1.4 | 1.4.3-12.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| opensuse:go1.9 | 1.9.7-11.2 · openSUSE:Tumbleweed | Package registry (OSV) |
| red hat:golang | 0:1.6.3-1.el7_2.1 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:golang-bin | 0:1.6.3-1.el7_2.1 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:golang-docs | 0:1.6.3-1.el7_2.1 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:golang-misc | 0:1.6.3-1.el7_2.1 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:golang-src | 0:1.6.3-1.el7_2.1 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| red hat:golang-tests | 0:1.6.3-1.el7_2.1 · Red Hat:enterprise_linux:7::server | Package registry (OSV) |
| suse:go | 1.6.1-6.1 · SUSE:Package Hub 12 | Package registry (OSV) |
| suse:go1.4 | 1.4.3-6.1 · SUSE:Package Hub 12 | 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.
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
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.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (8 more)Show less
- www.kb.cert.org/vuls/id/797896
- www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
- www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- bugzilla.redhat.com/show_bug.cgi?id=1353798
- h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03770en_us
- httpoxy.org/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7WGHKKCFP4PLVSWQKCM3FJJPEWB5ZNTU/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OR52UXGM6RKSCWF3KQMVZGVZVJ3WEESJ/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.