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firefox

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When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

CVE-2023-4583 is a vulnerability identified in Mozilla Firefox and Thunderbird affecting versions prior to Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. The issue stems from the HttpBaseChannel component's logic when verifying if the Browsing Context has been discarded. Specifically, if the load group is unavailable, the code incorrectly assumes the Browsing Context has already been discarded. This assumption does not always hold true for private channels after the private session has ended, leading to potential inconsistencies in session state management. The vulnerability is categorized under CWE-754, which relates to improper check for unusual or exceptional conditions. The CVSS v3.1 base score is 7.5, with vector AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N, indicating a network attack vector with low attack complexity, no privileges or user interaction required, unchanged scope, no confidentiality impact, but a high impact on integrity and no impact on availability. This suggests an attacker could remotely exploit this flaw to alter or interfere with data integrity within private browsing sessions without needing authentication or user interaction. Although no exploits are currently known in the wild, the vulnerability poses a significant risk to users of affected Firefox and Thunderbird versions. The flaw could be leveraged to bypass privacy protections or manipulate session data, undermining user confidentiality and trust in private browsing modes. The absence of patch links in the provided data suggests that fixes may be pending or not explicitly linked here, emphasizing the need for vigilance and timely updates once patches are released.

Detailed information about CVE-2023-4583: Vulnerability in Mozilla Firefox affecting Mozilla Firefox. Get real-time updates, technical details, and mitigation s

CVE-2023-4583: Vulnerability in Mozilla Firefox - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-4583: Vulnerability in Mozilla Firefox

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