描述:
有關 Adobe Reader 及 Acrobat 的安全更新已發布,以應對數個漏洞。遠端攻擊者可誘使目標用戶開啓特製的PDF檔案來攻擊這些漏洞。
有報告指 Adobe Reader 中針對 Windows 用戶的執行任意程式碼漏洞 (CVE-2021-28550 ) 正受到攻擊。系統管理員應立即為受影響的系統安裝修補程式,以減低受到網絡攻擊的風險。
受影響的系統:
- Acrobat DC (Windows) Continuous 2021.001.20150 和之前版本
- Acrobat Reader DC (Windows) Continuous 2021.001.20150 和之前版本
- Acrobat DC (macOS) Continuous 2021.001.20149 和之前版本
- Acrobat Reader DC (macOS) Continuous 2021.001.20149 和之前版本
- Acrobat 2020 (Windows 及 macOS) Classic 2020 2020.001.30020 和之前版本
- Acrobat Reader 2020 (Windows 及 macOS) Classic 2020 2020.001.30020 和之前版本
- Acrobat 2017 (Windows 及 macOS) Classic 2017 2017.011.30194 和之前版本
- Acrobat Reader 2017 (Windows 及 macOS) Classic 2017 2017.011.30194 和之前版本
影響:
成功利用這些漏洞可在受影響的系統導致執行任意程式碼、權限提升及泄漏資訊。
建議:
受影響系統的用戶應更新 Adobe Reader 及 Acrobat 至以下版本以應對以上問題。更新可透過產品本身的自動更新機制或下列網址更新其軟件:
- Acrobat DC (Windows 及 macOS) Continuous 2021.001.20155
https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/index.html#continuous-track
- Acrobat Reader DC (Windows 及 macOS) Continuous 2021.001.20155
https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/index.html#continuous-track
- Acrobat 2020 (Windows 及 macOS) Classic 2020 2020.001.30025
https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/index.html#classic-track
- Acrobat Reader 2020 (Windows 及 macOS) Classic 2020 2020.001.30025
https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/index.html#classic-track
- Acrobat 2017 (Windows 及 macOS) Classic 2017 2017.011.30196
https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/index.html#id3
- Acrobat Reader 2017 (Windows 及 macOS) Classic 2017 2017.011.30196
https://www.adobe.com/devnet-docs/acrobatetk/tools/ReleaseNotesDC/index.html#id3
進一步資訊:
- https://helpx.adobe.com/security/products/acrobat/apsb21-29.html
- https://www.hkcert.org/tc/security-bulletin/adobe-monthly-security-update-may-2021
- https://us-cert.cisa.gov/ncas/current-activity/2021/05/11/adobe-releases-security-updates-multiple-products
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21038
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21044
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21086
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28550
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28553
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28555
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28557 (to CVE-2021-28562)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28564
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28565