CVE-2024-42219: 
NixOS vulnerability analysis and mitigation

1Password 8 before version 8.10.36 for macOS contains a security vulnerability (CVE-2024-42219) that was discovered by the Robinhood Red Team during a security assessment. The vulnerability was disclosed privately to AgileBits and affects the app's platform security protections, specifically related to insufficient XPC inter-process communication validation (Vendor Advisory, Help Net).

The vulnerability stems from insufficient validation of XPC (inter-process communication) on macOS systems. The flaw allows malicious processes to bypass inter-process communication protections by hijacking or impersonating trusted 1Password integrations, such as the browser extension or CLI. The vulnerability has been assigned a CVSS 3.1 base score of 7.8 (High) by NVD with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, while CISA-ADP assessed it with a score of 7.0 (High) (NVD).

If exploited, the vulnerability allows attackers to exfiltrate vault items and obtain derived values used for 1Password authentication, specifically the account unlock key (AUK) and 'SRP-x' values. The attack has high confidentiality and integrity impact, though it does not affect system availability (Vendor Advisory, Help Net).

The vulnerability has been patched in 1Password 8 version 8.10.36, released in July 2024. Users of affected versions are strongly advised to update to the latest version immediately. It's worth noting that 1Password 7 for Mac is not affected by this vulnerability (Vendor Advisory).

The vulnerability was initially kept private until the patch was released. Additional technical details were shared by 1Password CTO Pedro Canahuati, who emphasized that all the vulnerabilities are local and require device compromise. The Robinhood Red Team presented their findings at DEF CON, providing more detailed technical information about the vulnerability (Help Net).