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»ó¼¼¼³¸í ¿ø°Ý Windows È£½ºÆ®¿¡ ¼³Ä¡µÈ Adobe Acrobat ¹öÀüÀº 2017.011.30202, 2020.004.30015 ¶Ç´Â 2021.007.20091 ÀÌÀü ¹öÀüÀÔ´Ï´Ù. µû¶ó¼­ ¿©·¯ Ãë¾àÁ¡ÀÇ ¿µÇâÀ» ¹Þ½À´Ï´Ù.

- Acrobat Reader DC ¹öÀü 2021.005.20060(¹× ÀÌÀü), 2020.004.30006(¹× ÀÌÀü) ¹× 2017.011.30199(¹× ÀÌÀü)´Â Ư¼öÇÏ°Ô Á¶ÀÛµÈ PDF ÆÄÀÏÀ» ±¸¹® ºÐ¼®ÇÒ ¶§ ¹öÆÛ ¿À¹öÇ÷ΠÃë¾àÁ¡ÀÇ ¿µÇâÀ» ¹Þ½À´Ï´Ù.
ÀÎÁõµÇÁö ¾ÊÀº °ø°ÝÀÚ´Â ÀÌ Ãë¾àÁ¡À» ¾Ç¿ëÇÏ¿© ÇöÀç »ç¿ëÀÚÀÇ ÄÁÅؽºÆ®¿¡¼­ ÀÓÀÇ Äڵ带 ½ÇÇàÇÒ ¼ö ÀÖ½À´Ï´Ù. ÀÌ ¹®Á¦¸¦ ¾Ç¿ëÇÏ·Á¸é ÇÇÇØÀÚ°¡ ¾Ç¼º ÆÄÀÏÀ» ¿­¾î¾ß ÇÑ´Ù´Â Á¡¿¡¼­ »ç¿ëÀÚ »óÈ£ ÀÛ¿ëÀÌ ÇÊ¿äÇÕ´Ï´Ù. (CVE-2021-39863)

- Acrobat Reader DC ¹öÀü 2021.005.20060(¹× ÀÌÀü), 2020.004.30006(¹× ÀÌÀü) ¹× 2017.011.30199(¹× ÀÌÀü)´Â Á¦¾îµÇÁö ¾Ê´Â °Ë»ö °æ·Î ¿ä¼Ò Ãë¾àÁ¡ÀÇ ¿µÇâÀ» ¹Þ½À´Ï´Ù. °ø°ÝÀÚ´Â ÀÌ Ãë¾àÁ¡À» ¾Ç¿ëÇÏ¿© DLL ÇÏÀÌÀçÅ·À» ÅëÇØ ÇöÀç »ç¿ëÀÚÀÇ ÄÁÅؽºÆ®¿¡¼­ ÀÓÀÇÀÇ Äڵ带 ½ÇÇàÇÒ ¼ö ÀÖ½À´Ï´Ù. ÀÌ ¹®Á¦¸¦ ¾Ç¿ëÇÏ·Á¸é »ç¿ëÀÚ »óÈ£ ÀÛ¿ëÀÌ ÇÊ¿äÇÕ´Ï´Ù. (CVE-2021-35982)

- Acrobat Reader DC ¹öÀü 2021.005.20060(¹× ÀÌÀü), 2020.004.30006(¹× ÀÌÀü) ¹× 2017.011.30199(¹× ÀÌÀü)´Â ´ÙÀ½À» ÃÊ·¡ÇÒ ¼ö ÀÖ´Â AcroForm buttonGetIcon ÀÛ¾÷ ó¸®ÀÇ use-after-free Ãë¾àÁ¡ÀÇ ¿µÇâÀ» ¹Þ½À´Ï´Ù. ÇöÀç »ç¿ëÀÚÀÇ ÄÁÅؽºÆ®¿¡¼­ ÀÓÀÇÀÇ ÄÚµå ½ÇÇàÀÌ °¡´ÉÇÕ´Ï´Ù. ÀÌ ¹®Á¦¸¦ ¾Ç¿ëÇÏ·Á¸é ÇÇÇØÀÚ°¡ ¾Ç¼º ÆÄÀÏÀ» ¿­¾î¾ß ÇÑ´Ù´Â Á¡¿¡¼­ »ç¿ëÀÚ »óÈ£ ÀÛ¿ëÀÌ ÇÊ¿äÇÕ´Ï´Ù. (CVE-2021-39836)

- Acrobat Reader DC ¹öÀü 2021.005.20060(¹× ÀÌÀü), 2020.004.30006(¹× ÀÌÀü) ¹× 2017.011.30199(¹× ÀÌÀü)´Â ´ÙÀ½À» À¯¹ßÇÒ ¼ö ÀÖ´Â AcroForm deleteItemAt ÀÛ¾÷ ó¸® ½Ã use-after-free Ãë¾àÁ¡ÀÇ ¿µÇâÀ» ¹Þ½À´Ï´Ù. ÇöÀç »ç¿ëÀÚÀÇ ÄÁÅؽºÆ®¿¡¼­ ÀÓÀÇÀÇ ÄÚµå ½ÇÇàÀÌ °¡´ÉÇÕ´Ï´Ù. ÀÌ ¹®Á¦¸¦ ¾Ç¿ëÇÏ·Á¸é ÇÇÇØÀÚ°¡ ¾Ç¼º ÆÄÀÏÀ» ¿­¾î¾ß ÇÑ´Ù´Â Á¡¿¡¼­ »ç¿ëÀÚ »óÈ£ ÀÛ¿ëÀÌ ÇÊ¿äÇÕ´Ï´Ù. (CVE-2021-39837)

- Acrobat Reader DC ¹öÀü 2021.005.20060(¹× ÀÌÀü), 2020.004.30006(¹× ÀÌÀü) ¹× 2017.011.30199(¹× ÀÌÀü)´Â ´ÙÀ½À» À¯¹ßÇÒ ¼ö ÀÖ´Â AcroForm buttonGetCaption ÀÛ¾÷ ó¸®ÀÇ use-after-free Ãë¾àÁ¡ÀÇ ¿µÇâÀ» ¹Þ½À´Ï´Ù. ÇöÀç »ç¿ëÀÚÀÇ ÄÁÅؽºÆ®¿¡¼­ ÀÓÀÇÀÇ ÄÚµå ½ÇÇàÀÌ °¡´ÉÇÕ´Ï´Ù. ÀÌ ¹®Á¦¸¦ ¾Ç¿ëÇÏ·Á¸é ÇÇÇØÀÚ°¡ ¾Ç¼º ÆÄÀÏÀ» ¿­¾î¾ß ÇÑ´Ù´Â Á¡¿¡¼­ »ç¿ëÀÚ »óÈ£ ÀÛ¿ëÀÌ ÇÊ¿äÇÕ´Ï´Ù. (CVE-2021-39838)

* ¾Ë¸²: ÀÌ Á¡°ËÇ׸ñÀº Á¡°ËÇϱâ À§ÇÑ È£½ºÆ®·Î ·Î±×ÀÎ ÇÒ ¼ö ÀÖ´Â °ü¸®ÀÚ ±ÇÇÑÀ» °¡Áø °èÁ¤À» ÇÊ¿ä·Î ÇÑ´Ù. ÀÌ·¯ÇÑ Á¶°ÇÀÌ ¾ÈµÇ¸é Á¡°ËÀ» ¼öÇàÇÒ ¼ö ¾øÀ¸¸ç ¸ðµç Ãë¾àÇÑ È£½ºÆ®µé¿¡ ´ëÇؼ­ °ÅÁþ À½¼º¹ÝÀÀ(False Negative)À» º¸ÀÏ ¼ö ÀÖ´Ù.

* Âü°í »çÀÌÆ®:
https://cwe.mitre.org/data/definitions/121.html
https://cwe.mitre.org/data/definitions/200.html
https://cwe.mitre.org/data/definitions/125.html
https://cwe.mitre.org/data/definitions/416.html
https://cwe.mitre.org/data/definitions/122.html
https://cwe.mitre.org/data/definitions/476.html
https://cwe.mitre.org/data/definitions/787.html
https://cwe.mitre.org/data/definitions/843.html
https://cwe.mitre.org/data/definitions/427.html
https://helpx.adobe.com/security/products/acrobat/apsb21-55.html

* ¿µÇâÀ» ¹Þ´Â Ç÷§Æû:
Adobe Acrobat 2017.011.30202 ÀÌÀüÀÇ ¹öÀüµé
Microsoft Windows Any version
Linux Any version
ÇØ°áÃ¥ ´ÙÀ½ Adobe º¸¾È °Ô½Ã¹°¿¡ ¼³¸íµÇ¾î ÀÖµíÀÌ Adobe AcrobatÀÇ °¡Àå ÃֽŠ¹öÀü(2017.011.30202 ¶Ç´Â ÀÌÈÄ)À¸·Î ¾÷±×·¹À̵å ÇÏ¿©¾ß ÇÑ´Ù:
https://helpx.adobe.com/security/products/acrobat/apsb21-55.html
°ü·Ã URL CVE-2021-39843,CVE-2021-39841,CVE-2021-39863,CVE-2021-39857,CVE-2021-39856,CVE-2021-39855,CVE-2021-39844,CVE-2021-39861,CVE-2021-39858 (CVE)
°ü·Ã URL (SecurityFocus)
°ü·Ã URL (ISS)