Cross-Site Scripting (XSS) ndi vuto lomwe limalola wowukirayo kulowetsa zolemba zoyipa patsamba lawebusayiti, zolemba zomwe zimayendetsedwa mu msakatuli wa wogwiritsa ntchito wina ngati kuti ndi zake. Zimayikidwa nthawi zonse mu OWASP Wapamwamba 10, ndipo ikadali njira imodzi yodziwika bwino yomwe owukira amabera deta ya nthawi, kuba maakaunti, kapena kusokoneza mwakachetechete chidaliro cha pulogalamuyo kwa ogwiritsa ntchito ake.
SAST Zida ndi imodzi mwa njira zothandiza kwambiri zopezera zofooka izi msanga, kusanthula ma source code kuti mudziwe momwe XSS imagwirira ntchito, codeyo isanafike popanga. Mu positi iyi: mitundu itatu yodziwika bwino ya XSS, momwe imaonekera mu code yeniyeni, ndi momwe imagwirira ntchito. SAST zida (kuphatikizapo machitidwe angapo olembera ma code) zitsekeni zisanatumizidwe.
Kodi XSS Vulnerability ndi Chiyani Ndipo N’chifukwa Chiyani Muyenera Kusamala?
Zofooka za XSS zimachitika pamene pulogalamu imatenga zinthu zosadalirika, zomwe wogwiritsa ntchito amalemba, kuziyika, kapena kuziyika mu URL, ndikuzibwezeretsa patsamba popanda kuzitsimikizira kapena kuzithawa kaye. Izi zikachitika, wowukirayo amatha kubisa script m'malo mwa mawu wamba, ndipo msakatuli alibe njira yodziwira kusiyana kwake: amangoyendetsa, ndi chidaliro ndi zilolezo zomwezo monga tsamba lonselo.
Ndicho chimene chimapangitsa XSS kukhala yoopsa ngakhale kuti vuto lomwe limayambira nthawi zambiri limakhala laling'ono. Malo amodzi osakonzedwa bwino amalola woukira kuba ma cookies a session ndikulanda akaunti yomwe yalowa, kutumiza ogwiritsa ntchito mwakachetechete patsamba la phishing, kulemba ma keystrokes, kapena kulembanso zomwe mlendo akuwona, zonse popanda kukhudza ma seva anu mwachindunji. Kusatetezeka kumeneku kumakhalapo kokha chifukwa cha momwe msakatuli amadalira zotsatira za pulogalamu yanu.
Ichi ndichifukwa chake XSS imawonekera kawirikawiri mu OWASP Top 10: sikufuna unyolo waukadaulo wogwiritsa ntchito, imangofunika kulowetsa kamodzi kokha, ndipo blast radius imafikira kwa wogwiritsa ntchito aliyense amene amatsegula tsamba lomwe lakhudzidwa.
Kuukira kwa XSS Kosatsimikizika: Mitundu Itatu Yodziwika Kwambiri
1. XSS Yosungidwa: Chiwopsezo Chosatha
XSS yosungidwa imayika script yoyipa kwamuyaya pa seva, kotero imawombera yokha kwa aliyense wogwiritsa ntchito amene pambuyo pake amawona tsamba lomwe lakhudzidwa.
Zofooka za XSS zosungidwa zimachitika pamene zolemba zoyipa zimasungidwa kosatha pa seva (monga mu database) ndipo zimachitidwa nthawi iliyonse wogwiritsa ntchito akafika patsamba lomwe lakhudzidwalo.
Chitsanzo: gawo la ndemanga lomwe limavomereza zolemba zosavomerezeka za ogwiritsa ntchito:
2. XSS Yowonetsedwa: Yoperekedwa Pakanthawi
XSS yowonetsedwa imakhala mu ulalo umodzi wopangidwa, script imagwira ntchito pokhapokha ngati wozunzidwayo wadina, nthawi zambiri kudzera mu phishing kapena social engineering.
XSS yowonetsedwa imachitika pamene zolemba zoyipa zimayikidwa mu ma URL ndikugwiritsidwa ntchito pamene wogwiritsa ntchito akugwiritsa ntchito ulalo, womwe nthawi zambiri umaperekedwa kudzera mu phishing kapena social engineering.
Chitsanzo:
3. XSS Yochokera ku DOM: Ziwopsezo Zobisika mu Msakatuli
XSS yochokera ku DOM siikhudza seva konse, script yoyipa imagwira ntchito mbali yonse ya kasitomala, kudzera mu JavaScript yomwe imasokoneza zomwe zili patsamba.
Mu mtundu uwu, zolemba zoyipa zimagwiritsira ntchito zofooka zomwe zili mu JavaScript ya kasitomala kuti zisinthe Document Object Model (DOM).
Chitsanzo: chidutswa cha JavaScript chomwe chimapereka mawonekedwe osayera a ogwiritsa ntchito modabwitsa:
Kodi mukufuna kudziwa kuti pali mitundu ingati ya mapangidwe awa yomwe ilipo kale mu codebase yanu? SAST Kusanthula chizindikiro chosungidwa, chowonetsedwa, ndi XSS yochokera ku DOM imakhala ndi zoopsa zokha, zisanafike pa pull request.
Bwanji SAST Zida Zimayimitsa XSS M'njira Zake
Kuyesa Chitetezo cha Static Application (SASTZida) ndizofunika kwambiri pozindikira zofooka za XSS kumayambiriro kwa nthawi ya Software Development Life Cycle (SDLC).
Ubwino chinsinsi
Mavuto Okhudza Kugwira Nsomba Poyamba Kukula
SAST Zida zimasanthula ma source code kuti zione momwe zinthu zilili zovuta kugwiritsa ntchito pulogalamuyo isanayambe kugwiritsidwa ntchito.
Chitsanzo cha kufooka komwe kwatchulidwa:
Njira ina yotetezeka:
Unikani Codebase Yonse
Modern SAST Zipangizo sizimangosanthula ma code apadera okha; zimasanthulanso zodalira ndi malaibulale a chipani chachitatu, kuti zipeze zoopsa zobisika.
Phatikizani Mosasunthika ndi CI/CD
SAST zida zimasanthula zokha zofooka za XSS mu pull requests ndikuletsa khodi yosatetezeka kuti isaphatikizidwe.
Yang'anani pa Zinthu Zofunika Kwambiri
SAST Zipangizo zimaika patsogolo kukonza mwa kuwunika momwe zinthu zingagwiritsidwire ntchito komanso kuopsa kwa zofooka, zomwe zimathandiza magulu kuthetsa mavuto ofunikira kwambiri kaye.
Momwe Xygeni Imakuthandizireni Kupambana Nkhondo Yolimbana ndi XSS
Xygeni imaphatikiza kusanthula kosasintha, kukonzanso koyendetsedwa ndi AI, ndi kuwonekera kwa unyolo woperekera kuti atseke kusiyana pakati pa kupeza kufooka kwa XSS ndikukonza kwenikweni. Umu ndi momwe mungachitire:
- Code Security (SAST): Imasanthula khodi ya chipani choyamba kuti ione ngati pali zolakwika zina za XSS ndi zina monga momwe zalembedwera, kuzipeza zisanagwiritsidwe ntchito. Pa OWASP Benchmark, Xygeni-SAST amapeza chiwongola dzanja chenicheni cha 100% pakupeza XSS ndi zotsatira zabodza zochepa.
- Kukonza Mwachangu kwa AI: Imakonza nthawi yomweyo zofooka za XSS zomwe zawonetsedwa ndi kukonza kokonzeka kwa opanga mapulogalamu, ndikupanga pull request ndi njira ina yotetezeka yogwirizana ndi codebase yanu, palibe chifukwa chokonza ndi manja.
- Chitetezo cha Malware: Imayang'anira kudalira ndi malaibulale a chipani chachitatu kuti ione ma code olowetsedwa kapena osokonekera, kotero kuti mawonekedwe osatetezeka omwe ali mu phukusi lotseguka asadutse ndemanga yanu ya ma code a chipani choyamba.
- IDE ndi CI/CD Kugwirizana: Mbendera zimatuluka mwachindunji mu IDE pamene code yalembedwa, ndipo zimalemba pull requests imayikidwa yokha kudzera pa GitHub, GitLab, Bitbucket, Azure DevOps, ndi Jenkins, kotero kuti ma code omwe ali pachiwopsezo sangaphatikizidwe poyamba.
Pangani Mapulogalamu Okhazikika: Malangizo Oti Musunge Kulemba Ma Script Pamalo Osiyanasiyana
Kuti muteteze mapulogalamu anu, gwiritsani ntchito njira izi pamodzi ndi SAST zida:
- Sambitsani Zolowera za Ogwiritsa Ntchito: Gwiritsani ntchito malaibulale monga DOMPurify kuti muyeretsedwe bwino.
- Zotuluka mu Encode: Nthawi zonse sungani deta yosinthika musanayiike mu msakatuli.
- Tsatirani Ndondomeko Zachitetezo Cha Zamkati (CSPs): Letsani kugwiritsa ntchito script ku magwero odalirika.
- Pangani Kuwunika Ma Code Kukhale Kosalekeza, Osati Nthawi ndi Nthawi: M'malo mokonza ndemanga pamanja, yendetsani Xygeni's SAST kusanthula ngati pre-commit mbedza kapena mwachindunji mu CI/CD pipeline (GitHub, GitLab, Bitbucket, Azure DevOps, Jenkins), kotero aliyense commit imafufuzidwa yokha, ndipo khodi yosatetezeka sifika pa kuphatikizana.
Kodi mwakonzeka kuteteza mapulogalamu anu ku XSS?
Zofooka za XSS siziyenera kuopseza chitetezo cha pulogalamu yanu. Kumvetsetsa momwe zimagwirira ntchito, kuzigwira ndi SAST zida, komanso kutsatira njira zotetezeka zolembera ma code kungachepetse kufalikira kwanu pafupifupi zero musanapeze mpata.
At Xygeni, tapangidwa kuti tithane ndi zovuta izi msanga, kuyika patsogolo zomwe zili zofunika, ndikuziteteza ku zovuta zanu pipelines kwathunthu.
Sungitsani chizindikiro, kapena yambani kusanthula khodi yanu kwaulere lero.
