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掲載中修正状況不明OpenSSL
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CVE-2024-4741
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同じCVEでも、深刻度の評価や掲載状態は出典ごとに異なる場合があります。各出典の記録を残し、片方の棄却・撤回だけで他の告知の状態を書き換えません。
この出典のCVSS：未記録
この出典のCVSS：9.8
公開元の記載です。日本語での確認手順・対処の解説が付いていない項目も含まれます。
Issue summary: Calling the OpenSSL API function SSL_free_buffers may cause memory to be accessed that was previously freed in some situations Impact summary: A use after free can have a range of potential consequences such as the corruption of valid data, crashes or execution of arbitrary code. However, only applications that directly call the SSL_free_buffers function are affected by this issue. Applications that do not call this function are not vulnerable. Our investigations indicate that this function is rarely used by applications. The SSL_free_buffers function is used to free the internal OpenSSL buffer used when processing an incoming record from the network. The call is only expected to succeed if the buffer is not currently in use. However, two scenarios have been identified where the buffer is freed even when still in use. The first scenario occurs where a record header has been received from the network and processed by OpenSSL, but the full record body has not yet arrived. In this case calling SSL_free_buffers will succeed even though a record has only been partially processed and the buffer is still in use. The second scenario occurs where a full record containing application data has been received and processed by OpenSSL but the application has only read part of this data. Again a call to SSL_free_buffers will succeed even though the buffer is still in use. While these scenarios could occur accidentally during normal operation a malicious attacker could attempt to engineer a stituation where this occurs. We are not aware of this issue being actively exploited. The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
個別の対処手順は未記録です。開発元の最新の案内と、対象の製品・系列に合う修正版を確認してください。
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3a12439a-ef3a-4c79-92e6-6081a721f1e5
openssl
2024-11-13T10:20:50.711Z
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現在の保存内容2026/11/07 10:00
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