CyberRota Analysis
AI-GeneratedThe vulnerability affects F5's Omnivore API, specifically in the handling of Apple sign-in token verification, allowing attackers to bypass authentication by exploiting a flaw in the decodeAppleToken function. By manipulating the 'alg' field in the JWT header, an attacker can forge a token that appears valid, enabling impersonation of any Apple-linked account. Organizations using F5 products should prioritize remediation to protect against potential unauthorized access and account compromise.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
The Omnivore API (packages/api) before the fix in commit abf53d6 contains an authentication bypass in Apple sign-in token verification. The decodeAppleToken function extracted the 'alg' field from the attacker-supplied JWT header and passed it as the sole allowed algorithm to jwt.verify(). Using jsonwebtoken v8 (which does not validate key/algorithm compatibility), an attacker can set alg=HS256 and sign a forged token using Apple's publicly available RSA public key as the HMAC secret, bypassing signature verification and impersonating any Apple-linked account.