Ibihe Byose byihutirwa: Iyo "Critical" Ihindutse Urusaku rwera
Niba ishyirahamwe ryanyu ryarakomeje gukora Citrix NetScaler ADCs cyangwa amarembo yaguye umwaka ushize, ntabwo wari gufata ibyago gusa; watumaga witabira ibiza. CISA yihutiye kumenyesha umunsi wa zeru, CVE-2023-4966, uzwi cyane ku izina rya "Citrix Bleed," ntabwo yari imyitozo ngororamubiri mu gucunga ibyago [1, 2]. Byari umuburo utajenjetse, kwemeza mu buryo butaziguye ko abateye bari basanzwe * imbere mu miyoboro y'abatinze guterwa. Tariki ya 27 Ukwakira 2023, igihe ntarengwa cy’inzego z’ubumwe bwa Leta zashyizweho, cyashyizweho n’amabwiriza yihutirwa ya CISA 23-02, cyarageze [3]. Niba inzego za federasiyo, hamwe nubutunzi bukomeye hamwe nitsinda ryumutekano ryabigenewe, bahuye nibibazo byujuje intego, birerekana igitutu kinini kubandi bose.
Ibi ntabwo arikimwe gusa, kibi. Ibi bijyanye no kunanirwa gutahura uburemere bw "ibikorwa remezo bikomeye" mugihe cya digitale. Ibikoresho bya NetScaler nuburyo bwa digitale ihwanye n’inyubako nkuru y’inyubako yawe, igenzura ry’umutekano, hamwe na sisitemu ya HVAC byose byazindukiye muri kimwe. Bicaye kuri perimetero, bakora ibyemezo, kuringaniza imizigo, no gucunga ibinyabiziga. RCE (Gukora Kode ya kure) kubikoresho nkibi ntabwo ari ukurenga gusa; ni sisitemu yuzuye yo gufata, urufunguzo rwibanze rwahawe umwanzi. Turimo kuvuga ku buryo bwo kwemerera abateye gutera imbaraga mu miyoboro y'imbere, gusohora amakuru yoroheje, cyangwa gukoresha incungu hamwe no kubaga neza. Kuba CVE-2023-4966 * yarakoreshejwe cyane *, ubu byanditswe mu gitabo cya KEV cya CISA, bivuze ko idirishya ryo kwirwanaho ryifunze byihuse [1]. Amashyirahamwe ntiyari akibuza igitero; bagabanyaga ibyabaye bikomeje.
Mucukumbuzi nka Perimetero Nshya: Inzira ya Chrome itagira iherezo
Mugihe gusa wibwiraga ko urusobe rwa perimeteri aricyo kintu cyonyine kigoswe, Google ihora itangaza ikindi gisasu: yakoresheje zeru-iminsi muri Chrome. Kurugero, CVE-2024-4947, inenge ikomeye ya V8 yo kwitiranya ibintu, yari imwe gusa mubibazo byakoreshejwe cyane byagaragaye muri uyu mwaka * [4]. Ibi ntabwo ari ibicucu; ni icyitegererezo. Buri patch nshya, akenshi iherekejwe no kwinginga byihutirwa "kuvugurura ako kanya," yerekana itandukaniro, nyamara rifite uburiganya, icyerekezo cyo kumvikana. Mugihe NetScaler irinda amarembo, Chrome niyo yinjira ahantu hose mumufuka wumukozi, kuri buri kazi, no muri buri biro bishingiye kubicu.
Tumaze imyaka, dushimangira umutekano wanyuma, ariko umuvuduko mwinshi wa Chrome zeru-iminsi ituma twumva duhora duharanira gukomeza. Buri kimwe muri izo ntege nke kigaragaza igitero gishobora guterwa nigitero, urubuga rubi, cyangwa umuyoboro wamamaza wangiritse ushobora gukora code uko bishakiye kumashini yukoresha. Kuva aho, ni hop ngufi yo kwiba ibyangombwa, kugenda kuruhande, cyangwa kohereza malware zinoze. "Mucukumbuzi ya interineti izwi cyane ku isi" nayo, mu buryo bwagutse, hejuru y’ibitero bizwi cyane ku isi.
Ibishushanyo byo kugenzura: Impamvu dukomeza kugwa inyuma
None, niyihe nsanganyamatsiko ihuriweho hano? Ntabwo aribyo gusa ko ari "intege nke". Nuburyo buteganijwe, hafi yimigenzo yo kuvumbura no kubikoresha. Twafashwe mubihe byihutirwa, aho "byihutirwa byihutirwa" byahindutse uburyo bwimikorere, aho kuba bidasanzwe.
Kubera iki?
- ** Umwenda utoroshye: ** NetScaler na Chrome byombi nibice bitangaje bya software. NetScaler, hamwe nibintu byinshi bitabarika hamwe nibikorwa byayo, irerekana igitero kinini. Chrome, hamwe na moteri yayo ya JavaScript (V8), itanga moteri, hamwe nibindi byiyongeraho, ni intego igenda kubashakashatsi bashinzwe umutekano ndetse nabatera. Ingorabahizi zibyara amakosa, kandi byanze bikunze, biganisha ku ntege nke.
- Barahiga byimazeyo izo nenge, akenshi bafite ibikoresho byingenzi. Bimaze kuboneka, umunsi wa zeru ni itike ya zahabu, ikoreshwa bucece kugeza igihe agapira kabahatiye ukuboko. Kuba aba * bakoreshwa cyane * bivuze ko abanzi basanzwe imbere yumurongo.
- ** Gufata Ubumuga: ** Kubikorwa remezo bikomeye nka NetScaler, gutondeka akenshi bisobanura igihe gito, gutegura neza, no guhuza amakipe menshi. Mu mishinga minini, ibi birashobora kuba inzozi za bureucratique. Kuri Chrome, biroroshye, ariko biracyashingira kubikorwa byabakoresha cyangwa ubuyobozi bukomeye. "Gushiraho no kubyibagirwa" imitekerereze, cyangwa bibi, uburyo "tuzabigeraho mu gihembwe gitaha", ni inzira yo kumvikana. Itariki ntarengwa ya CISA kuri NetScaler, ubu yararenganye, nibutsa byimazeyo iyi inertia. 4 .. Ishoramari mu guhiga iterabwoba, gucunga neza abatishoboye, no kwigisha umutekano uhoraho akenshi biragereranywa ugereranije n’ibisubizo byabaye nyuma y’ibyabaye.
Kurenga Patch: Umuhamagaro wo Kuvugurura Ingamba
Kubwira ishyirahamwe "guhita uhita" ni nko kubwira umuntu urwanira mumazi maremare "koga cyane." Birakenewe, ariko ntabwo bikemura ikibazo cyihishe inyuma. Dukeneye impinduka zifatika muburyo twegera umutekano.
- ** Dufate Ubwumvikane: ** Moderi ishaje ya perimeteri yapfuye. Dufate ko NetScaler yawe * yarenze. Dufate ko abakoresha bawe ba Chrome mushakisha * bazakoreshwa. Shyira mubikorwa imiyoboro ikomeye, byibuze amahirwe yo kubona, hamwe no gukomeza gukurikirana ibikorwa bidasanzwe. Guhiga iterabwoba ntabwo ari ibintu byiza; ni ngombwa. Reba ibimenyetso byihishe: guhuza bidasanzwe bidasanzwe bivuye kuri NetScaler yawe, konti zabakoresha bashya, ibikorwa bitunguranye.
- ** Hindura ibintu byose bishoboka: ** Gucunga ibice byanyuma nka Chrome bigomba kuba byikora kandi bigashyirwa mubikorwa. Kubikorwa remezo bikomeye nka NetScaler, mugihe bigoye cyane, inzira igomba kunozwa, kugeragezwa, no kwitoza. Igihe ntarengwa cyo kuvugurura umutekano kigomba gutegurwa no kwemerwa nkigiciro cyo gukora ubucuruzi, ntibirindwe kubiciro byose.
- ** Gushora imbaraga, Ntabwo Kwirinda gusa: ** Gahunda yo gusubiza ibyabaye igomba kugeragezwa kurugamba. Urashobora gutahura vuba? Urashobora kubirimo? Urashobora gukira utishyuye incungu? Ibi nibibazo bifite akamaro mugihe gukumira byanze bikunze. ** Kubacuruza ibikorwa remezo bikomeye nka Citrix, ibyateganijwe bigomba kuba hejuru. Ibicuruzwa byabo ninkingi yimikorere yibikorwa.
Ikigaragara ni uko, ntabwo ari ibintu byihariye. Nibimenyetso bya ecosystem ya digitale mugihe gihoraho, gikomeye. Imenyesha "kunegura" rizakomeza kuza. Ikibazo ntabwo * niba * ishyirahamwe ryanyu rizaba ryibasiwe, ariko * mugihe *, kandi niba warimutse ukarenza urugero kugirango wubake ubwirinzi bukomeye. Niba itariki ntarengwa ya CISA kuri NetScaler itagabanije ingamba z'umutekano wawe, igihe kirageze cyo kongera gusuzuma.
Inkomoko
] [2] Abakinnyi babangamira Citrix NetScaler ADC na Citrix NetScaler Gateway Vulnerability (CVE-2023-4966) - https://www.cisa.gov/amakuru-amakuru [3] Amabwiriza yihutirwa 23-02: Kugabanya Citrix NetScaler ADC hamwe nintege nke za Gateway - https://www.cisa.gov/amakuru-amakuru [4] Kuvugurura Umuyoboro uhamye kuri desktop (CVE-2024-4947) - [5] Citrix NetScaler ADC na Citrix NetScaler Irembo ryumutekano wa CVE-2023-4966 na CVE-2023-4967 - https://support.citrix.com/article/CTX579459/citrix-netscaler-adc- na-citrix