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NVD / CVE Program· CNA apache

CVE-2017-3167: In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, use of the ap_get_basic_auth_pw() by third-party modules outside of the…

CriticalCVSS 9.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Plan (action score 45/100)

  • 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: 20.2% (FIRST EPSS); higher than 97.5% 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. No special conditions are required; it is repeatable.
  • Fixed version: apache2 (Alpine:v3.10) 2.4.26-r0; apache2 (Debian:12) 2.4.25-4; apache2 (Debian:7) 2.2.22-13+deb7u9.

Add it to your regular patch cycle. Upgrade to apache2 (Alpine:v3.10) 2.4.26-r0; apache2 (Debian:12) 2.4.25-4; apache2 (Debian:7) 2.2.22-13+deb7u9 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

In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, use of the ap_get_basic_auth_pw() by third-party modules outside of the authentication phase may lead to authentication requirements being bypassed.

Published
Jun 19, 2017
Updated
Jun 16, 2026
EPSS
20.2% · 97th percentile

Report tools

JSON

Action score

45

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
6 / 30 · 20.2%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

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Affected 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.

VendorProduct
apachehttp server
netappclustered data ontap
netapponcommand unified manager
netappstoragegrid
redhatenterprise linux desktop
redhatenterprise linux eus
redhatenterprise linux server
redhatenterprise linux server aus
redhatenterprise linux server tus
redhatenterprise linux workstation
redhatjboss core services
redhatenterprise linux

and 3 more

Using http server? Add it to your stack and be the first to know about CVEs like this one. (Apache HTTP)

Watch new CVEs for http server

When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or is weaponized

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Is Apache HTTP Server on your server exposed to the internet?Run a port scan

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every Monday

Is Apache HTTP Server on your server exposed to the internet?

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.

  • Apache Software Foundation Apache HTTP Server

    • 2.2.0 to 2.2.32, 2.4.0 to 2.4.25affected

Affected versions

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

  • apache http server2.2.0 and later · before 2.2.33
  • apache http server2.4.0 and later · before 2.4.26

Package-level exposure

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

EcosystemPackageAffected rangeFix
Alpine:v3.10apache2before 2.4.26-r02.4.26-r0
Debian:12apache2before 2.4.25-42.4.25-4
Debian:7apache2before 2.2.22-13+deb7u92.2.22-13+deb7u9
Debian:8apache2before 2.4.10-10+deb8u92.4.10-10+deb8u9
Debian:9apache2before 2.4.25-3+deb9u12.4.25-3+deb9u1
Red Hat:enterprise_linux:6::clienthttpdbefore 0:2.2.15-60.el6_9.50:2.2.15-60.el6_9.5
Red Hat:enterprise_linux:6::clienthttpd-debuginfobefore 0:2.2.15-60.el6_9.50:2.2.15-60.el6_9.5
Red Hat:enterprise_linux:6::clienthttpd-develbefore 0:2.2.15-60.el6_9.50:2.2.15-60.el6_9.5
Red Hat:enterprise_linux:6::clienthttpd-manualbefore 0:2.2.15-60.el6_9.50:2.2.15-60.el6_9.5
Red Hat:enterprise_linux:6::clienthttpd-toolsbefore 0:2.2.15-60.el6_9.50:2.2.15-60.el6_9.5
Red Hat:enterprise_linux:6::clientmod_sslbefore 1:2.2.15-60.el6_9.51:2.2.15-60.el6_9.5
Red Hat:enterprise_linux:7::clienthttpdbefore 0:2.4.6-67.el7_4.20:2.4.6-67.el7_4.2
Red Hat:enterprise_linux:7::clienthttpd-debuginfobefore 0:2.4.6-67.el7_4.20:2.4.6-67.el7_4.2
Red Hat:enterprise_linux:7::clienthttpd-develbefore 0:2.4.6-67.el7_4.20:2.4.6-67.el7_4.2
Red Hat:enterprise_linux:7::clienthttpd-manualbefore 0:2.4.6-67.el7_4.20:2.4.6-67.el7_4.2
Red Hat:enterprise_linux:7::clienthttpd-toolsbefore 0:2.4.6-67.el7_4.20:2.4.6-67.el7_4.2
Red Hat:enterprise_linux:7::clientmod_ldapbefore 0:2.4.6-67.el7_4.20:2.4.6-67.el7_4.2
Red Hat:enterprise_linux:7::clientmod_proxy_htmlbefore 1:2.4.6-67.el7_4.21:2.4.6-67.el7_4.2
Red Hat:enterprise_linux:7::clientmod_sessionbefore 0:2.4.6-67.el7_4.20:2.4.6-67.el7_4.2
Red Hat:enterprise_linux:7::clientmod_sslbefore 1:2.4.6-67.el7_4.21:2.4.6-67.el7_4.2
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpdbefore 0:2.4.23-125.jbcs.el60:2.4.23-125.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpd-debuginfobefore 0:2.4.23-125.jbcs.el60:2.4.23-125.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpd-develbefore 0:2.4.23-125.jbcs.el60:2.4.23-125.jbcs.el6
Red Hat:jboss_core_services:1::el6jbcs-httpd24-httpd-libsbefore 0:2.4.23-125.jbcs.el60:2.4.23-125.jbcs.el6

+72

Same product

apache: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-42013Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)KEV
    99Now
  • CVE-2021-41773Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49KEV
    99Now
  • CVE-2024-38475Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.KEV
    96Now

Published before and after this one in the same product

  • ← EarlierCVE-2016-5387Jul 18, 2016 · The Apache HTTP Server through 2.4.23 follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of…
    49Plan
  • ← EarlierCVE-2016-8740Dec 5, 2016 · The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not…
    54Plan
  • Later →CVE-2017-3169Jun 19, 2017 · In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, mod_ssl may dereference a NULL pointer when third-party modules call…
    45Plan

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
alpine:apache22.4.26-r0 · Alpine:v3.10Package registry (OSV)
debian:apache22.4.25-4 · Debian:12Package registry (OSV)
red hat:httpd0:2.2.15-60.el6_9.5 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:httpd-debuginfo0:2.2.15-60.el6_9.5 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:httpd-devel0:2.2.15-60.el6_9.5 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:httpd-manual0:2.2.15-60.el6_9.5 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:httpd-tools0:2.2.15-60.el6_9.5 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:httpd24-httpd0:2.4.25-9.el6.1 · Red Hat:rhel_software_collections:2::el6Package registry (OSV)
red hat:httpd24-httpd-debuginfo0:2.4.25-9.el6.1 · Red Hat:rhel_software_collections:2::el6Package registry (OSV)
red hat:httpd24-httpd-devel0:2.4.25-9.el6.1 · Red Hat:rhel_software_collections:2::el6Package registry (OSV)
red hat:mod_ldap0:2.4.6-67.el7_4.2 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:mod_proxy_html1:2.4.6-67.el7_4.2 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:mod_session0:2.4.6-67.el7_4.2 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:mod_ssl1:2.2.15-60.el6_9.5 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
suse:apache22.4.23-28.1 · SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2Package 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.
  • No special conditions are required; it is repeatable.

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
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
app.use("/admin", requireSession, adminRouter);
// Route added later skips the middlewareapp.post("/admin-api/config", updateConfig);

Fixed

ts
const admin = express.Router();admin.use(requireSession, requireRole("admin"));
admin.post("/config", updateConfig);app.use("/admin", admin);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (19 more)

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

All records