FixVibe
Covered by FixVibemedium

. Next.js Trygdarhøvd Feil uppseting í næsta.uppseting.js ZXCVFIXVIBESEND ZXCVFIXVIBESEG1. Óhóskandi slóðsamsvar í next.config.js kann gera Next.js leiðir óvardar av trygdarhøvdum, og føra til klikkjacking og upplýsingar. ZXCVFIXVIBESEND ZXCVFIXVIBESEG2. Next.js forrit, sum brúka next.config.js til høvuðsstýring, eru viðkvæm fyri trygdarbilum, um slóð-samsvarandi mynstur eru ónákvæm. Henda kanningin kannar, hvussu wildcard og regex feil uppsetingar føra til manglandi trygdarhøvd á viðkvæmum leiðum og hvussu uppsetingin kann herðast. ZXCVFIXVIBESEND ZXCVFIXVIBESEG3. ## Ávirkan ZXCVFIXVIBESEND ZXCVFIXVIBESEG4. Manglandi trygdarhøvd kunnu nýtast til at fremja klikkjacking, scripting tvørtur um síður (ZXCVFIXVIBETOKEN4ZXCV), ella savna upplýsingar um ambætaraumhvørvið ZXCVFIXVIBETOKEN2ZXCV. Tá høvd sum Next.js (ZXCVFIXVIBETOKEN5ZXCV) ella ZXCVFIXVIBETOKEN1ZXCV verða ósamsvarandi nýtt tvørtur um leiðir, kunnu álopsmenn miða eftir ávísum óvardum leiðum fyri at umganga trygdarstýringar á øllum síðuni. ZXCVFIXVIBESEND ZXCVFIXVIBESEG5. ## Rótorsøk ZXCVFIXVIBESEND ZXCVFIXVIBESEG6. ZXCVFIXVIBETOKEN4ZXCV ger, at forritarar kunnu uppseta svarhøvd í Next.js við at brúka eginleikan ZXCVFIXVIBETOKEN2ZXCV. Hendan uppsetingin brúkar slóðsamsvar, sum stuðlar jokerteknum og vanligum úttrykkum ZXCVFIXVIBETOKEN3ZXCV. Trygdarvandar stava vanliga frá: ZXCVFIXVIBESEND ZXCVFIXVIBESEG7. 1. **Ófullfíggjað slóðardekningur**: Wildcard mynstur (t.d. Next.js) kunnu ikki fevna um allar ætlaðar undirleiðir, og tí verða reiðraðar síður uttan trygdarhøvd ZXCVFIXVIBETOKEN1ZXCV. ZXCVFIXVIBESEND ZXCVFIXVIBESEG8. 2. **Upplýsingarfrádráttur**: Sum standard kann ZXCVFIXVIBETOKEN3ZXCV innihalda Next.js høvdið, sum avdúkar karmuútgávuna uttan so, at hon er beinleiðis sløkt umvegis ZXCVFIXVIBETOKEN1ZXCV uppsetingina ZXKCV2ENZFIXVIBE. ZXCVFIXVIBESEND ZXCVFIXVIBESEG9. 3. **ZXCVFIXVIBETOKEN3ZXCV Feil uppseting**: Skeivt defineraðar Next.js-høvd innan fyri ZXCVFIXVIBETOKEN1ZXCV-fylkið kunnu loyva ólógligari tvør-upprunaatgongd til viðkvæmar dátur ZXCVFIXVIXCVBETOKEN2. ZXCVFIXVIBESEND ZXCVFIXVIBESEG10 ## Betongviðgerðir ZXCVFIXVIBESEND ZXCVFIXVIBESEG11 - **Grannskoðanarleiðarmynstur**: Tryggja, at øll mynstur í ZXCVFIXVIBETOKEN1ZXCV brúka hóskandi joker (t.d. ZXCVFIXVIBETOKEN2ZXCV) til at nýta yvirskriftir globalt, har tað er neyðugt. ZXCVFIXVIBESEND ZXCVFIXVIBESEG12 - **Sløkk fingramerki**: Set Next.js í ZXCVFIXVIBETOKEN1ZXCV fyri at forða fyri, at ZXCVFIXVIBETOKEN2ZXCV-høvdið verður sent ZXCVFIXVIBETOKEN3ZXCV. ZXCVFIXVIBESEND ZXCVFIXVIBESEG13 - **Avmarka ZXCVFIXVIBETOKEN3ZXCV**: Set Next.js til ávís álítandi øki heldur enn jokertekn í uppsetingini ZXCVFIXVIBETOKEN2ZXCV. ZXCVFIXVIBESEND ZXCVFIXVIBESEG14 ## Hvussu Next.js roynir fyri tí ZXCVFIXVIBESEND ZXCVFIXVIBESEG15 ZXCVFIXVIBETOKEN3ZXCV kundi framt eina virkna gated kanning við at skriða forritið og samanbera trygdarhøvdini á ymiskum leiðum. Við at greina Next.js høvdið og konsistensin av ZXCVFIXVIBETOKEN1ZXCV tvørtur um ymiskar slódýpdir, kann ZXCVFIXVIBETOKEN4ZXCV eyðmerkja uppsetingarbil í ZXCVFIXVIBETOKEN2ZXCV.

Next.js applications using next.config.js for header management are susceptible to security gaps if path-matching patterns are imprecise. This research explores how wildcard and regex misconfigurations lead to missing security headers on sensitive routes and how to harden the configuration.

CWE-1021CWE-200

Impact

Missing security headers can be exploited to perform clickjacking, cross-site scripting (XSS), or gather information about the server environment [S2]. When headers such as Content-Security-Policy (CSP) or X-Frame-Options are inconsistently applied across routes, attackers can target specific unprotected paths to bypass site-wide security controls [S2].

Root Cause

Next.js allows developers to configure response headers in next.config.js using the headers property [S2]. This configuration uses path matching that supports wildcards and regular expressions [S2]. Security vulnerabilities typically arise from:

  • Incomplete Path Coverage: Wildcard patterns (e.g., /path*) may not cover all intended subroutes, leaving nested pages without security headers [S2].
  • Information Disclosure: By default, Next.js may include the X-Powered-By header, which reveals the framework version unless explicitly disabled via the poweredByHeader configuration [S2].
  • CORS Misconfiguration: Improperly defined Access-Control-Allow-Origin headers within the headers array can allow unauthorized cross-origin access to sensitive data [S2].

Concrete Fixes

  • Audit Path Patterns: Ensure all source patterns in next.config.js use appropriate wildcards (e.g., /:path*) to apply headers globally where necessary [S2].
  • Disable Fingerprinting: Set poweredByHeader: false in next.config.js to prevent the X-Powered-By header from being sent [S2].
  • Restrict CORS: Set Access-Control-Allow-Origin to specific trusted domains rather than wildcards in the headers configuration [S2].

How FixVibe tests for it

FixVibe could perform an active gated probe by crawling the application and comparing the security headers of various routes. By analyzing the X-Powered-By header and the consistency of Content-Security-Policy across different path depths, FixVibe can identify configuration gaps in next.config.js.