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セキュリティ勉強会 / How do we confront the threat
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TomoyaKitaura
April 14, 2021
Technology
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セキュリティ勉強会 / How do we confront the threat
TomoyaKitaura
April 14, 2021
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Transcript
ηΩϡϦςΟษڧձ ~ Ͳ͏ͬͯڴҖʹ ཱ͔͍͚͍͍ͪͬͯͷ͔ฤ ~ 2021/04/12 ͖ͨ͏Β
ຊͷΰʔϧ 2 ηΩϡϦςΟରࡦɺ ࠓޙͲ͏ͬͯऔΓΜͰ͍͜͏ ↓ ʢΘ͔͔ͬͨΒʣ࣮ࡍʹऔΓΜͰΈΑ͏!
͎͘͡ 3 1.ηΩϡϦςΟ͓͍͍ͬͯ͠ͷʁ - ߈ܸ͕ޭͨ͠ΒͲΜͳඃΛड͚Δ͔ - ҰݴͰઆ໌͍ͯ͘͠10େڴҖ 2.ηΩϡϦςΟͱͷ͖߹͍ํ ▪৫ͱͯ͠ -
Ͳ͏͢Ε҆৺ͱݴ͍ΕΔͷ͔ - ͔͚Δඅ༻ͱͲͷఔ͕దͳͷ͔ ▪ΤϯδχΞͱͯ͠ - ୭͕ԿΛҙࣝ͢Ε͍͍ͷ͔ - Ͳ͏ͬͯษڧͨ͠Β͍͍ͷ͔
4 1.ηΩϡϦςΟ͓͍͍ͬͯ͠ͷʁ
߈ܸΛड͚ͨΒͲΜͳඃΛड͚Δ͔ 5 - ۚમͷଛࣦ ଛഛঈͷࢧ͍ ෮چରԠ։ൃඅ༻༷ʑͳରԠඅ༻ - ސ٬ͷଛࣦ
ࣾձతධՁԼʹΑΔސ٬ྲྀग़ औҾઌ͔Βͷडఀࢭ - ࣄۀܧଓͷ્ ਓࡐྲྀग़ - ৽ػೳ։ൃͷԆ ճ෮ରԠ༏ઌʹΑΔͷݮଛ
ҰݴͰઆ໌͢Δ10େڴҖ 6 - ΠϯδΣΫγϣϯ - ೝূͷෆඋ - ػີใͷ࿐ग़ - XML֎෦ΤϯςΟςΟࢀরʢXXEʣ
- ΞΫηε੍ޚͷෆඋ - ෆదͳηΩϡϦςΟઃఆ - ΫϩεαΠτεΫϦϓςΟϯά - ҆શͰͳ͍σγϦΞϥΠθʔγϣϯ - طͷ੬ऑੑΛ࣋ͭίϯϙʔωϯτͷ༻ - ෆेͳϩΪϯάͱࢹ https://wiki.owasp.org/images/2/23/OWASP_Top_10-2017%28ja%29.pdf
ΠϯδΣΫγϣϯ 7 ▪༰ ੬ऑੑͷ͋ΔγεςϜʹରͯ͠ɺ։ൃऀͷఆ ֎ʹΑΔจࣈྻೖྗΛߦ͏͜ͱʹΑΓɺγες ϜΛͬऔͬͨΓվ᜵͢ΔڴҖ
ೝূͷෆඋ 8 ▪༰ ʮਖ਼͍͠ΞΫηεݖΛ࣋ͭਓ͕ਖ਼͘͠ΞΫηε ݖΛ࣋ͭʯͱ͍͏͋Δ͖ঢ়ଶ͕ෆඋʹΑͬ ͯ৵͞Εͯ͠·͏ڴҖ
ػີใͷ࿐ग़ 9 ▪༰ ҙਤͤͣॏཁσʔλ͕҉߸Խ͞Ε͍ͯͳ͍/ެ ։͞Εͯ͠·͍ͬͯΔͰୈࡾऀ͕ӾཡͰ͖ ͯ͠·͏ڴҖ
XML֎෦ΤϯςΟςΟࢀরʢXXEʣ 10 ▪༰ XMLϓϩηοαͷ༷Λٯखʹͱͬͯɺ ༷ʑͳ߈ܸΛՄೳͱͯ͠͠·͏ڴҖ
ΞΫηε੍ޚͷෆඋ 11 ▪༰ ຊདྷඞཁͱ͞ΕΔΞΫηεݖݶҎ্ͷػೳΛ ࣮ߦͰ͖ͯ͠·͏͜ͱʹΑΓɺΞΫηεݖݶ ཧશମ͕੬ऑͱͳ͍ͬͯΔ༷ͷڴҖ
ෆదͳηΩϡϦςΟઃఆ 12 ▪༰ ਓతϛεෆదͳઃఆʹΑͬͯɺ༷ʑͳ੬ ऑੑΛҾ͖ى͍ͯ͜͠Δ༷ͷڴҖ
ΫϩεαΠτεΫϦϓςΟϯά 13 ▪߈ܸ༰ ੬ऑੑͷ͋ΔඪతαΠτͷυϝΠϯݖݶʹΑͬͯѱ ҙͷ͋ΔεΫϦϓτΛ࣮ߦͤ͞Δ͜ͱ͕Ͱ͖ΔڴҖ
҆શͰͳ͍σγϦΞϥΠθʔγϣϯ 14 ▪߈ܸ༰ ੬ऑੑͷ͋ΔσʔλมΛߦ͏ॲཧʹ͓͍ͯɺ ѱҙͷ͋ΔϓϩάϥϜΛ࣮ߦͤͯ͞͠·͏ͱ͍͏ڴҖ
طͷ੬ऑੑΛ࣋ͭίϯϙʔωϯτͷ༻ 15 ▪߈ܸ༰ ೝ͞Εͨ੬ऑੑΛରࡦ͠ͳ͍··ར༻͢Δ͜ͱ ʹΑΓɺ༷ʑͳ߈ܸΛڐ༰ͱͯ͠͠·͏ڴҖ
ෆेͳϩΪϯάͱϞχλϦϯά 16 ▪߈ܸ༰ ߈ܸͷૣظൃݟ߈ܸऀʹରͯ͠ૌুΛߦ͏ͨΊ ͷূڌ͕ඞཁͱͳΔ͕ɺෆेͰ͋Δ͕ނʹͦͷ ճ෮ߦಈ͕ߦ͑ͳ͍ڴҖ
17 2.ηΩϡϦςΟͱͷ͖߹͍ํ
18 ~৫ͱͯ͠ฤ~ Ͳ͏͢Ε҆৺ͱ͍͍͖ΕΔͷ͔
Ͳ͏͢Ε҆৺ͱ͍͍͖ΕΔͷ͔ 19 - WAFΛద༻ࡁΈ - ΞΫηεݖݶ࠷దԽࡁΈ - ଟཁૉೝূඞਢԽࡁΈ - IDSಋೖࡁΈ
- σϓϩΠ࣌ͷCI/CDϓϩηεͰϖωτϨΠγϣϯςετ࣮ߦࡁΈ - …etc ͜͜·ͰΕόονϦɾɾɾ
Ͳ͏͢Ε҆৺ͱ͍͍͖ΕΔͷ͔ 20 ɾɾɾͱͳΒͳ͍ͷͳΜͰͩΖ͏͔
21 ʲ࣮2લʹߟ͑ͨೝྖҬͰͷηΩϡϦςΟରࡦʳ - WAFΛద༻ࡁΈ - ΞΫηεݖݶ࠷దԽࡁΈ - ଟཁૉೝূඞਢԽࡁΈ - IDSಋೖࡁΈ
- σϓϩΠ࣌ͷCI/CDϓϩηεͰϖωτϨΠγϣϯςετ࣮ߦࡁΈ - …etc ʲൃੜ͓͔ͯ͘͠͠ͳ͍ڴҖʳ - 1લʹೝ͞Εͨ৽ͨͳڴҖ - ೝྖҬ֎ͷڴҖ - ಋೖͨ͠ηΩϡϦςΟରࡦ͕ٕज़తʹԽͨ͜͠ͱʹΑΔڴҖ
22 ʲ࣮2લʹߟ͑ͨೝྖҬͰͷηΩϡϦςΟରࡦʳ - WAFΛద༻ࡁΈ - ΞΫηεݖݶ࠷దԽࡁΈ - ଟཁૉೝূඞਢԽࡁΈ - IDSಋೖࡁΈ
- σϓϩΠ࣌ͷCI/CDϓϩηεͰϖωτϨΠγϣϯςετ࣮ߦࡁΈ - …etc ʲൃੜ͓͔ͯ͘͠͠ͳ͍ڴҖʳ - 1લʹೝ͞Εͨ৽ͨͳڴҖ - ೝྖҬ֎ͷڴҖ - ಋೖͨ͠ηΩϡϦςΟରࡦ͕ٕज़తʹԽͨ͜͠ͱʹΑΔڴҖ ͳʹ͕͍͚ͳ͔ͬͨɾɾɾʁ
ܧଓతࢿͷେࣄ͞ 23 - ηΩϡϦςΟͷ͕ى͖ͨͱ͖ʹ ៦Δ͖ϓϩηε͕ଘࡏ͠ͳ͍͜ͱ͕ Ұ൪ͷෆ҆ཁૉ - Ծʹܧଓతͳ׆ಈΛ্ͨ͠Ͱ͕ൃੜͨ͠߹ɺ
ͦͷ׆ಈࣗମͷϓϩηεΛݟ͢͠ΕΑ͘ɺ ͦ͏ͬͯ৫ڧ͘ͳ͍ͬͯ͘ͷͩͱݸਓతʹ ࢥ͍·͢ɻ
24 ~৫ͱͯ͠ฤ~ ͔͚Δඅ༻ͱͬͯͲͷఔ͕దͳͷ
͔͚Δඅ༻ͱͬͯͲͷఔ͕దͳͷ 25 ݱࡏͷྫ ӡ༻ 40% ৽ػೳ։ൃ 60%
͔͚Δඅ༻ͱͬͯͲͷఔ͕దͳͷ 26 ྫ1 ηΩϡϦςΟ 40% ӡ༻ 40% ৽ػೳ։ൃ 20% ηΩϡϦςΟਖ਼ٛͰ͢!!
ྫ2 ηΩϡϦςΟ 5% ӡ༻ 40% ৽ػೳ։ൃ 55% ސ٬֫ಘ͕ୈҰ༏ઌͰ͢!!
͕ൃੜͨ͠ͱ͖ͷͲ͏ͳΔͷ͔ 27 ൃੜ࣌ͷྫ োରԠ 60% ӡ༻ 40% - ηΩϡϦςΟʹΑΔ͕ൃੜ ͨ͠߹ɺ৽ػೳ։ൃͷதࢭΛ
༨ّͳ͘͞ΕΔέʔε͕ଟʑ - ৽ػೳ։ൃΛࢭΊͳ͍ͨΊͱ͍ ͏ҙຯͰηΩϡϦςΟ׆ಈ ࢿͰ͋Δͱ͍͏ߟ͑ํ༗ޮ
ࢿదʹܭը͠ɺಘΒΕΔརӹ࠷େԽ͢Δ 28 - ·ͣݱঢ়ௐࠪͷλεΫ͔Βߦ͢Δ - ௐࠪ݁Ռ͔ΒҰ൪ࢿରޮՌ͕ߴͦ͏ͳࢪࡦΛܭը͠ɺ࣮ߦ͢ΔɻͦͷͨΊ ͷΛ֬อ͢Δͱ͍͏αΠΫϧΛճ͢͜ͱͰ࠷దԽ͍ͯ͘͠(มಈ͢Δ͜ͱ Λલఏͱ͢Δ) - ௐࠪλεΫܧଓతʹߦ͍ɺௐࠪ༰ɾํ๏ΕͣʹΞοϓσʔτΛ͔͚ͯ
͍͘ - ࢪࡦ༰ʹ͓͍ͯɺ͍҆ɺ͏·͍ɺૣ͍ਖ਼ٛ
29 ~ΤϯδχΞͱͯ͠ฤ~ ୭͕ԿΛҙࣝ͢ΕΑ͍ͷ͔
୭͕ҙࣝ͢Δඞཁ͕͋Δͷ͔ 30 ଟޚͱ ηΩϡϦςΟରࡦΛΈ߹Θͤͯ֊Λங͘͜ͱͰɺ Ұͭͷରࡦ͕ഁΒΕͯ࣍ͷʢͦͷ·ͨ࣍ͷʣରࡦ͕ ߈ܸΛࢭ͠ɺ߈ܸͷݕٴͼରԠͰ͖ΔΑ͏ʹ͢Δ ૯߹తͳηΩϡϦςΟΞϓϩʔνΛࢦ͢ɻ
୭͕ҙࣝ͢Δඞཁ͕͋Δͷ͔ 31 ͭ·Γɺ ϑϩϯτΤϯυ όοΫΤϯυ Πϯϑϥ ֊Λ্هʹݟཱͯͨ߹ɺͦΕͧΕ͕ηΩϡϦςΟରࡦΛ ࢪ͢͜ͱʹΑͬͯɺΑΓڧݻͳηΩϡϦςΟΛங͘͜ͱ͕Ͱ͖Δ ΑΓޮՌతͳରࡦΛݕ౼͢ΔʹɺΈΜͳͷྗ͕ෆՄܽ
୭͕ҙࣝ͢Δඞཁ͕͋Δͷ͔ -> શһ 32
33 ~ΤϯδχΞͱͯ͠ฤ~ Ͳ͏ͬͯษڧͨ͠Β͍͍ͷ͔
ηΩϡϦςΟͷษڧํ๏ʢश׳ฤʣ 34 - Qiita https://qiita.com/ - Zenn https://zenn.dev/
- Developer io https://dev.classmethod.jp/
ηΩϡϦςΟͷษڧํ๏ʢಡॻฤʣ 35
ηΩϡϦςΟͷษڧํ๏ʢWebฤʣ 36 - OWASP Top 10 ~2017~ ڴҖͷτϨϯυ͕ΕΔ -
OWASP Top 10 Proactive Controls ~2018~ શ։ൃνʔϜʹ͚ͯޮՌతͱ͞ΕΔରࡦͷհ - Google ChromeͷηΩϡϦςΟΞοϓσʔτ ΞοϓσʔτΛ͢ΔʹࢸͬͨܦҢഎܠΛ ղઆͯ͘͠ΕͯΔέʔε͕͋Δ - ҆શͳΣϒαΠτͷ࡞ΓํʢIPAʣ ۩ମతͳ߈ܸ༰ͷৄࡉͱͦͷରࡦͳͲ͕ཏతʹهࡌ͞ΕͯΔ
վΊͯຊͷΰʔϧ 37 ηΩϡϦςΟରࡦɺ ࠓޙͲ͏ͬͯऔΓΜͰ͍͜͏ ↓ ʢΘ͔͔ͬͨΒʣ࣮ࡍʹऔΓΜͰΈΑ͏!
վΊͯຊͷΰʔϧ 38 ͳʹ͔ҰͭͰ࣋ͪؼͬͯ ࣮ફʹͭͳ͛ͯΒ͑ͨΒ خ͍͠Ͱ͢
39 ͝੩ௌ͋Γ͕ͱ͏ޚ࠲͍·ͨ͠