內容說明：
研究人員發現多款HP雷射印表機、多功能事務機及掃描器存在安全漏洞(CVE-2021-39237與CVE-2021-39238)，攻擊者可向受影響設備傳送含有特製字型之惡意檔案，進而在字型解析過程造成緩衝區溢位(Buffer Overflow)，導致攻擊者可遠端執行任意程式碼。
目前已知影響平台如下：
下方機型之韌體版本若為「FutureSmart3：3.9.8(不含)以前版本」、「FutureSmart4：4.11.2.1(不含)以前版本」或「FutureSmart5：5.3(不含)以前版本」，則存在漏洞：
HP Color LaserJet Enterprise CM4540 MFP series
HP Color LaserJet Enterprise Flow MFP M577
HP Color LaserJet Enterprise Flow MFP M578
HP Color LaserJet Enterprise Flow MFP M680
HP Color LaserJet Enterprise Flow MFP M681
HP Color LaserJet Enterprise Flow MFP M682
HP Color LaserJet Enterprise Flow MFP M776
HP Color LaserJet Enterprise Flow MFP M880z
HP Color LaserJet Enterprise M455
HP Color LaserJet Enterprise M552
HP Color LaserJet Enterprise M553
HP Color LaserJet Enterprise M555 Printer series
HP Color LaserJet Enterprise M651
HP Color LaserJet Enterprise M652
HP Color LaserJet Enterprise M653
HP Color LaserJet Enterprise M750
HP Color LaserJet Enterprise M751 series
HP Color LaserJet Enterprise M855 Printer series
HP Color LaserJet Enterprise M856
HP Color LaserJet Enterprise MFP M480 series
HP Color LaserJet Enterprise MFP M577
HP Color LaserJet Enterprise MFP M578
HP Color LaserJet Enterprise MFP M680
HP Color LaserJet Enterprise MFP M681
HP Color LaserJet Enterprise MFP M682
HP Color LaserJet Enterprise MFP M776
HP Color LaserJet Enterprises CP5525
HP Color LaserJet Managed E45028
HP Color LaserJet Managed E55040dw
HP Color LaserJet Managed E65050/60
HP Color LaserJet Managed E75245
HP Color LaserJet Managed E85055
HP Color LaserJet Managed Flow MFP E57540
HP Color LaserJet Managed Flow MFP E67550/60
HP Color LaserJet Managed Flow MFP E77822/25/30
HP Color LaserJet Managed Flow MFP E87640/50/60
HP Color LaserJet Managed Flow MFP M577
HP Color LaserJet Managed Flow MFP M680
HP Color LaserJet Managed Flow MFP M880zm
HP Color LaserJet Managed M553
HP Color LaserJet Managed M651
HP Color LaserJet Managed MFP E47528 series
HP Color LaserJet Managed MFP E57540
HP Color LaserJet Managed MFP E67550/60
HP Color LaserJet Managed MFP E67650/60
HP Color LaserJet Managed MFP E77422-E77428 series
HP Color LaserJet Managed MFP E77822/25/30
HP Color LaserJet Managed MFP E78223-E78228 series
HP Color LaserJet Managed MFP E78323/30
HP Color LaserJet Managed MFP E87640/50/60
HP Color LaserJet Managed MFP E87640du-E87660du series
HP Color LaserJet Managed MFP M577
HP Color LaserJet Managed MFP M680
HP Color LaserJet Managed MFP M775
HP Digital Sender Flow 8500 fn2 Document Capture Workstation
HP LaserJet Enterprise 500 color MFP M575
HP LaserJet Enterprise 500 color Printer M551 series
HP LaserJet Enterprise 500 MFP M525f
HP LaserJet Enterprise 600 Printer M601 series
HP LaserJet Enterprise 600 Printer M602 series
HP LaserJet Enterprise 600 Printer M603 series
HP LaserJet Enterprise 700 color MFP M775
HP LaserJet Enterprise 700 Printer M712 series
HP LaserJet Enterprise color Flow MFP M575
HP LaserJet Enterprise Flow MFP M525
HP LaserJet Enterprise Flow MFP M527z
HP LaserJet Enterprise Flow MFP M630
HP LaserJet Enterprise Flow MFP M631
HP LaserJet Enterprise Flow MFP M632
HP LaserJet Enterprise Flow MFP M633
HP LaserJet Enterprise Flow MFP M634
HP LaserJet Enterprise Flow MFP M635
HP LaserJet Enterprise Flow MFP M636
HP LaserJet Enterprise Flow MFP M830
HP LaserJet Enterprise M406
HP LaserJet Enterprise M407
HP LaserJet Enterprise M4555 MFP
HP LaserJet Enterprise M506
HP LaserJet Enterprise M507
HP LaserJet Enterprise M604 series
HP LaserJet Enterprise M605
HP LaserJet Enterprise M606 series
HP LaserJet Enterprise M607 series
HP LaserJet Enterprise M608 series
HP LaserJet Enterprise M609 series
HP LaserJet Enterprise M610 series
HP LaserJet Enterprise M611 series
HP LaserJet Enterprise M612 series
HP LaserJet Enterprise M806
HP LaserJet Enterprise MFP M430 series
HP LaserJet Enterprise MFP M431 series
HP LaserJet Enterprise MFP M527
HP LaserJet Enterprise MFP M528
HP LaserJet Enterprise MFP M630
HP LaserJet Enterprise MFP M631
HP LaserJet Enterprise MFP M632
HP LaserJet Enterprise MFP M633
HP LaserJet Enterprise MFP M634
HP LaserJet Enterprise MFP M635
HP LaserJet Enterprise MFP M636
HP LaserJet Enterprise MFP M725
HP LaserJet Managed 500 color MFP M575
HP LaserJet Managed 500 MFP M525
HP LaserJet Managed color Flow MFP M575
HP LaserJet Managed E40040
HP LaserJet Managed E50045
HP LaserJet Managed E50145
HP LaserJet Managed E60055/65/75 series
HP LaserJet Managed Flow MFP E52545c
HP LaserJet Managed Flow MFP E62555/65/75
HP LaserJet Managed Flow MFP E62675
HP LaserJet Managed Flow MFP E72525/30/35
HP LaserJet Managed Flow MFP E82540/50/60
HP LaserJet Managed Flow MFP M525
HP LaserJet Managed Flow MFP M527z
HP LaserJet Managed Flow MFP M630
HP LaserJet Managed Flow MFP M830
HP LaserJet Managed M506
HP LaserJet Managed M605 series
HP LaserJet Managed MFP E42540 series
HP LaserJet Managed MFP E52545
HP LaserJet Managed MFP E52645
HP LaserJet Managed MFP E62555/65
HP LaserJet Managed MFP E62655/65
HP LaserJet Managed MFP E72425/30
HP LaserJet Managed MFP E72525/30/35
HP LaserJet Managed MFP E82540/50/60
HP LaserJet Managed MFP E82540/50/60du series
HP LaserJet Managed MFP M527
HP LaserJet Managed MFP M630
HP LaserJet Managed MFP M725
HP OfficeJet Enterprise Color MFP X585
HP OfficeJet Enterprise Color X555
HP OfficeJet Managed Color MFP X585
HP PageWide Color 755
HP PageWide Color MFP 774
HP PageWide Color MFP 779
HP PageWide Enterprise Color 556
HP PageWide Enterprise Color 765
HP PageWide Enterprise Color Flow MFP 586z
HP PageWide Enterprise Color Flow MFP 780f
HP PageWide Enterprise Color Flow MFP 785
HP PageWide Enterprise Color MFP 586
HP PageWide Enterprise Color MFP 780
HP PageWide Managed Color E55650
HP PageWide Managed Color E75160
HP PageWide Managed Color Flow MFP E58650z
HP PageWide Managed Color Flow MFP E77650/60z
HP PageWide Managed Color Flow MFP E77660z
HP PageWide Managed Color MFP E58650dn
HP PageWide Managed Color MFP E77650
HP PageWide Managed Color MFP P77440
HP PageWide Managed Color MFP P77940/50/60
HP PageWide Managed Color P75250
HP PageWide Managed P55250dw Printer series
HP PageWide Managed P57750dw Multifunction Printer
HP Scanjet Enterprise 8500 FN1 Document Capture Workstation series
HP ScanJet Enterprise Flow N9120 fn2 Document Scanner
下方機型之韌體版本若為2142A(不含)以前版本，則存在漏洞：
HP PageWide 352dw Printer
HP PageWide 377dw Multifunction Printer
HP PageWide Pro 452dn Printer series
HP PageWide Pro 452dw Printer series
HP PageWide Pro 477dn Multifunction Printer series
HP PageWide Pro 477dw Multifunction Printer series
HP PageWide Pro 552dw Printer series
HP PageWide Pro 577 Multifunction Printer series
下方機型之韌體版本若為20211109(不含)以前版本，則存在漏洞：
HP Color LaserJet Pro M154
HP Color LaserJet Pro M253, M254
HP Color LaserJet Pro MFP M180, M181
HP Color LaserJet Pro MFP M280, M281
建議措施：
HP官方已針對這些漏洞釋出更新程式，請各機關聯絡設備維護廠商或參考以下網址進行更新：
1.https://support.hp.com/us-en/document/ish_5000383-5000409-16
2.https://support.hp.com/us-en/document/ish_5000124-5000148-16
參考資料：
1. https://support.hp.com/us-en/document/ish_5000383-5000409-16
2. https://support.hp.com/us-en/document/ish_5000124-5000148-16
3. https://thehackernews.com/2021/11/critical-wormable-security-flaw-found.html