Covered by FixVibehigh

. Sárbarleikagransking: SSRF og trygdarhøvuðsfylgja ZXCVFIXVIBESEND ZXCVFIXVIBESEG1. Lær hvussu umbønarfalsan á ambætarasíðuni (ZXCVFIXVIBETOKEN1ZXCV) og ótrygg HTTP-høvd ávirka vevtrygdina, og hvussu sjálvvirkandi tól sum SSRF kunnu uppdaga hesar váðar. ZXCVFIXVIBESEND ZXCVFIXVIBESEG2. Henda granskingargreinin kannar falsan av fyrispurningum á ambætarasíðuni (ZXCVFIXVIBETOKEN1ZXCV) og týdningin av at halda HTTP trygdarhøvd. Við at brúka innlit frá PortSwigger og Mozilla, kanna vit, hvussu sjálvvirkandi skanning eyðmerkir hesar sárbarleikar og hvussu SSRF kundi sett í verk líknandi uppdaganarmøguleikar. ZXCVFIXVIBESEND ZXCVFIXVIBESEG3. ## Ávirkan ZXCVFIXVIBESEND ZXCVFIXVIBESEG4. Umbønarfalsan á ambætarasíðuni (ZXCVFIXVIBETOKEN2ZXCV) er ein kritiskur sárbarleiki, sum ger, at ein álopsmaður kann fáa eitt forrit á ambætarasíðuni at gera umbønir til eitt ótilætlað stað SSRF. Hetta kann føra til, at viðkvæmar innanhýsis tænastur verða útsettar, ólóglig atgongd til skýmetadata endapunkt, ella at netverksbrandveggir ZXCVFIXVIBETOKEN1ZXCV verða umkoyrdir. ZXCVFIXVIBESEND ZXCVFIXVIBESEG5. ## Rótorsøk ZXCVFIXVIBESEND ZXCVFIXVIBESEG6. ZXCVFIXVIBETOKEN3ZXCV hendir vanliga, tá eitt forrit viðger URL'ir, sum brúkarin veitir, uttan nøktandi góðkenning, og ger, at ambætarin kann brúkast sum umboð fyri illgrunasamar fyrispurningar SSRF. Handan virknar feilir er samlaða trygdarstøðan á eini síðu nógv ávirkað av HTTP høvuðsuppsetingunum ZXCVFIXVIBETOKEN1ZXCV. HTTP Observatory hjá Mozilla, sum varð sett á stovn í 2016, hevur greinað yvir 6,9 milliónir heimasíður fyri at hjálpa umsitaranum at styrkja verjuna móti hesum vanligu hóttanum við at eyðmerkja og viðgera møguligar trygdarvandar ZXCVFIXVIBETOKEN2ZXCV. ZXCVFIXVIBESEND ZXCVFIXVIBESEG7. ## Hvussu SSRF roynir fyri tí ZXCVFIXVIBESEND ZXCVFIXVIBESEG8. SSRF fevnir longu um báðar partarnar av hesum granskingarevninum: ZXCVFIXVIBESEND ZXCVFIXVIBESEG9. * Gated ZXCVFIXVIBETOKEN2ZXCV staðfesting: SSRF koyrir bert inni í staðfestum virknum skanningum. Tað sendir avmarkaðar afturkallingarkanariufuglar uttan fyri bandið inn í URL-formaðar parametrar og ZXCVFIXVIBETOKEN3ZXCV-viðkomandi høvd, sum eru funnir undir skriðuni, og meldar síðani bert trupulleikan, tá ZXCVFIXVIBETOKEN1ZXCV fær eitt afturkallingarbundið til ta skanningina. ZXCVFIXVIBESEND ZXCVFIXVIBESEG10 * Høvuðsfylgja: SSRF kannar passivt svarhøvdini á síðuni fyri somu kaga-herðingarstýringar, sum ummæli í Observatory-stíli leggja dent á, eitt nú X-Innihald-slag-valmøguleikar, tilvísara-politikkur og loyvi-politikkur. ZXCVFIXVIBESEND ZXCVFIXVIBESEG11 SSRF-kanningin krevur ikki oyðileggjandi áheitanir ella sannroynda atgongd. Tað er umfatað av staðfest mark og greiðir frá ítøkiligum afturkallingarprógvum heldur enn at gita frá parameturnøvnum einsamøll.

This research article examines Server-Side Request Forgery (SSRF) and the importance of HTTP security header compliance. Using insights from PortSwigger and Mozilla, we explore how automated scanning identifies these vulnerabilities and how FixVibe could implement similar detection capabilities.

CWE-918

Impact

Server-Side Request Forgery (SSRF) is a critical vulnerability that allows an attacker to induce a server-side application to make requests to an unintended location [S1]. This can lead to the exposure of sensitive internal services, unauthorized access to cloud metadata endpoints, or the bypassing of network firewalls [S1].

Root Cause

SSRF typically occurs when an application processes user-supplied URLs without adequate validation, allowing the server to be used as a proxy for malicious requests [S1]. Beyond active flaws, the overall security posture of a site is heavily influenced by its HTTP header configurations [S2]. Launched in 2016, Mozilla's HTTP Observatory has analyzed over 6.9 million websites to help administrators strengthen their defenses against these common threats by identifying and addressing potential security vulnerabilities [S2].

How FixVibe tests for it

FixVibe already covers both parts of this research topic:

Gated SSRF confirmation: active.blind-ssrf runs only inside verified active scans. It sends bounded out-of-band callback canaries into URL-shaped parameters and SSRF-relevant headers discovered during crawl, then reports the issue only when FixVibe receives a callback tied to that scan.
Header compliance: headers.security-headers passively checks the site's response headers for the same browser-hardening controls emphasized by Observatory-style reviews, including CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.

The SSRF probe does not require destructive requests or authenticated access. It is scoped to verified targets and reports concrete callback evidence rather than guessing from parameter names alone.