corc.co.uk security report

Certificate, security headers, email authentication, DNS, registration, and exposed hosts — from public sources.

58risk

Elevated

Several issues worth triaging this week.

0Critical

1High

4Medium

5Low

2Info

Collected 1 hour ago91.4sfrom cache

Certificate Transparency
DNS resolution1
Network ownership0
CDN / WAF detection0
Exposed ports & CVEs12
Registration
DNS posture2
Email authentication1
Certificate
Security headers1
Archived URLs
Analysis12

noteCertificate Transparency did not complete (20). Results below are partial.
noteCertificate inspection is unavailable in this runtime.
noteNetwork ownership lookup is unavailable in this runtime; ASN and org are omitted.
noteCDN/WAF detection is unavailable in this runtime.

SPF and DKIM alone do not protect the From: address a person sees. Without DMARC, a spoofed message can pass SPF for some other domain and still display yours.
What to do
Publish `_dmarc.corc.co.uk TXT "v=DMARC1; p=none; rua=mailto:dmarc@corc.co.uk"`, review the reports, then move to p=quarantine and p=reject.
asset: corc.co.uk
FTP transmits credentials in cleartext.
What to do
Restrict 21/tcp to a VPN, bastion, or allow-listed source range.
asset: 185.136.248.153:21
CSP is the main defence that limits what an injected script can do. Without it, any XSS bug is fully exploitable.
What to do
Start with a report-only policy, tighten it against the reports, then enforce.
asset: https://www.corc.co.uk/
No X-Frame-Options or CSP frame-ancestors directive, so another site can load this page invisibly inside its own and trick users into clicking.
What to do
Send `X-Frame-Options: DENY` or `Content-Security-Policy: frame-ancestors ’none’`.
asset: https://www.corc.co.uk/
Without clientTransferProhibited, a compromised registrar account can move the domain to another registrar in days, with no second step.
What to do
Enable the transfer lock (and registrar lock, if offered) in the registrar control panel.
asset: corc.co.uk
185.136.248.153 (corc.co.uk) reports exim 4.99.5, lua-nginx-module 1.31.1.1, openresty 1.31.1.1. Publishing precise versions lets anyone match the host against a CVE feed without probing it, which is how targets get shortlisted for mass exploitation after a new advisory lands.
What to do
Suppress version tokens in server banners (for example `ServerTokens Prod` in Apache) and keep the packages current.
asset: 185.136.248.153
Browsers and the preload list expect at least six months; shorter values give little protection between visits.
What to do
Raise max-age to 31536000 (one year).
asset: https://www.corc.co.uk/
Lets browsers guess content types, which turns some upload and text endpoints into script injection points.
What to do
Send `X-Content-Type-Options: nosniff` on every response.
asset: https://www.corc.co.uk/
Full URLs — including any tokens or IDs in them — are sent to every third party the page links to.
What to do
Send `Referrer-Policy: strict-origin-when-cross-origin`.
asset: https://www.corc.co.uk/
Answers for this domain are not signed, so a resolver cannot tell a forged response from a real one.
What to do
Enable DNSSEC at your DNS host and publish the DS record at the registrar.
asset: corc.co.uk
Mail to this domain can be downgraded to plaintext by an on-path attacker, because senders have no way to know TLS is required.
What to do
Publish an MTA-STS policy (a TXT record plus a small HTTPS-hosted file).
asset: corc.co.uk
Any public certificate authority may issue certificates for this domain. CAA lets you name the ones allowed to.
What to do
Add a CAA record naming your CA, e.g. `0 issue "letsencrypt.org"`.
asset: corc.co.uk

final https://www.corc.co.uk/status 200time 3440msstack cloudflare

✓http:// redirects to https://
!Strict-Transport-Security
max-age=300; includeSubDomains; preload
✗Content-Security-Policy
✗Clickjacking protection
✗X-Content-Type-Options
✗Referrer-Policy
–Permissions-Policyoptional
–security.txt publishedoptional — tells researchers where to report bugs

✓Receives mail via 1 server
corc-co-uk.mail.protection.outlook.com
✓SPFends in -all
v=spf1 +ip4:84.18.210.76 +ip4:185.136.248.153 +include:spf.protection.outlook.com -all
✗DMARC
no record
!MTA-STSinbound mail can be downgraded to plaintext

!DNSSECanswers can be forged
–CAAany CA may issue
–IPv6 (AAAA)IPv4 only
✓2 nameservers
ns1.popcorndns.net ns2.popcorndns.net

✓Registered with Fasthosts Internet Ltd27.2 years old
corc.co.uk
✓Registration expiry310 days
2027-07-15
✗Transfer lock
none
✓2 nameservers at registry
ns1.popcorndns.net.ns2.popcorndns.net.

Address	Ports	CVEs	Edge	Network
185.136.248.153 corc.co.uk +4	215380110143443465587+4	0	direct	—

Archived URLs

Endpoints the Wayback Machine has kept — config files, backups, scripts. Slow to fetch, so it is here on request.

corc.co.uk security report

Elevated

Findings

Security headers

Email authentication

DNS

Registration

Hosts

Hostnames