Iyo Isingaperi Mamiriro Emergency: Kana "Yakanyanya" Ichiita Ruzha Ruchena

The Perpetual State of Emergency: Kana "Yakanyanya" Ichiita Ruzha Rwakachena

Kana sangano rako rakanga richiri kushanda risina kuvharwa Citrix NetScaler ADCs kana Gateways kudonha kwekupedzisira, wanga usiri kungotora njodzi; wanga uchishingaira kukoka njodzi. Yambiro yekukurumidzira yeCISA yezuva rakakosha zero-zuva, CVE-2023-4966, inozivikanwa zvakanyanya se "Citrix Bleed," yanga isiri dzidziso yekuitisa njodzi [1, 2]. Yakanga iri yambiro yakasimba, simbiso yakananga kuti vapambi vaive * vatove mukati * network yeavo vakanonoka kupeta. Iyo Gumiguru 27, 2023, nguva yekupedzisira yekuti masangano emubatanidzwa aite chigamba, akarairwa neCISA Emergency Directive 23-02, auya uye aenda [3]. Kana masangano emubatanidzwa, ane zviwanikwa zvawo uye zvikwata zvekuchengetedza zvakazvitsaurira, akatarisana nematambudziko achisangana nezvinangwa zvakadaro, zvinoratidzira kudzvanyirira kukuru kune wese wese.

Ichi hachisi chingori chimwechete, chinokanganisa. Izvi ndezvekutadza kwehurongwa kubata kusimba kwe "yakakosha zvivakwa" muzera redhijitari. NetScaler midziyo ndiyo yakaenzana nedhijitari yemukova mukuru wechivakwa chako, iyo yekuchengetedza yekutarisa, uye iyo HVAC system zvese zvakatenderedzwa kuita imwe. Ivo vanogara pamupendero, vachibata chokwadi, kuyera mutoro, uye manejimendi emigwagwa. RCE (Remote Code Execution) pamudziyo wakadaro hakusi kungotyora chete; itori full system takeover, kiyi huru inopihwa zvakananga kune mhandu. Tiri kutaura nezvemhando yekuwana iyo inoita kuti vanorwisa vapinde zvisina simba mumatiweki emukati, vabudise data rakajeka, kana kuendesa ransomware nekuvhiya chaiko. Icho chokwadi chekuti CVE-2023-4966 yaive yakanyatso shandiswa, ikozvino yakanyorwa muCISA's KEV catalogue, zvinoreva kuti hwindo rekuzvidzivirira rinovharika nekukurumidza [1]. Masangano akanga asingachadzivisi kurwisa; vakanga vachideredza chiitiko chiri kuitika.

Bhurawuza seNew Perrimeter: Chrome's Endless Vulnerability Cycle

Uye pawaifunga kuti network yako perimeter ndiyo chete yakakombwa, Google inogara ichizivisa imwe bhomba: kushingaira kushandisa zero-mazuva muChrome. Semuyenzaniso, CVE-2024-4947, yakakosha V8 mhando yekuvhiringika chikanganiso, yaingove imwe yeakawanda akabatikana abhinya akasungwa * gore rino* [4]. Uku hakusi kupenga; ndiwo muenzaniso wakafanana. Chigamba chitsva chega chega, chinowanzoperekedzwa nechikumbiro chekukasira che "kuvandudza nekukasira," chinonongedza chakasiyana, asi chakashata, vheji yekubvumirana. Nepo NetScaler ichirinda magedhi, Chrome ndiyo yakajairika yekupinda muhomwe yevashandi vese, pane yese nzvimbo yekushandira, uye mune yega-yakavakirwa padhisiki desktop.

Kwemakore, takasimbisa kuchengetedzwa kwemagumo, asi kumhanya kwakanyanya kweChrome zero-mazuva kunoita kuti tinzwe sekunge tiri kugara tichinetsekana kuti tienderane. Imwe neimwe yekusagadzikana uku inomiririra inogona kutyaira-nekurwiswa, webhusaiti ine hutsinye, kana yakakanganiswa ad network inokwanisa kuita zvehumwe kodhi pamushini wemushandisi. Kubva ipapo, ipfupi hop kuhumbavha hwechokwadi, kufamba kwemashure, kana kuendesa malware akanyanya. Iyo "webhusaiti inonyanya kufarirwa pasi rose" zvakare, nekuwedzera, ndiyo inonyanya kufarirwa kurwisa nzvimbo.

The Illusion of Control: Nei Tichiramba Tichiwira Kuseri

Saka, ndedzipi nyaya dzinozivikanwa pano? Hakusi chete kuti izvi "zvinokosha" kusasimba. Ndiwo hunhu hwekufungidzira, hunenge hwetsika hwekuwanikwa kwavo nekushandiswa. Isu tinobatwa mune isingaperi mamiriro ekukurumidzira, uko "chimbichimbi chigamba" chave chimiro chekushanda, pane kusarudzika.

Sei?

1. Chikwereti chakaoma: NetScaler neChrome zvidimbu zvesoftware zvakaoma kunzwisisa. NetScaler, ine makumi ezviuru maficha uye masanganiswa, inopa yakakura kurwisa nzvimbo. Chrome, ine injini yayo yeJavaScript (V8), inopa injini, uye inogara ichiwedzerwa maficha, ndiyo inofamba chinangwa chevaongorori vekuchengetedza uye vanorwisa zvakafanana. Kuoma kunzwisisa kunobereka tsikidzi, uye tsikidzi, zvisingadzivisiki, zvinotungamira mukusagadzikana.
2. Zvakanakira Murwisi: Nyika-nyika nemapoka ematsotsi emhando yepamusoro haasi kumirira kuburitswa pachena. Varikushingairira kuvhima zvikanganiso izvi, kazhinji nezviwanikwa zvakakosha. Kana rangowanikwa, zero-day itikiti regoridhe, rinoshandiswa chinyararire kusvika chigamba chamanikidza ruoko rwavo. Idi rokuti ava vari kushandirwa nesimba zvinoreva kuti vadzivisi vatove mberi kwegomba.
3. Patching Paralysis: Pazvivakwa zvakakosha seNetScaler, kupeta kazhinji kunoreva kuderera, kunyatsoronga, uye kurongeka pazvikwata zvakawanda. Mumabhizinesi makuru, izvi zvinogona kuve hutsinye hwehumambo. YeChrome, iri nyore, asi ichiri kutsamira pakuteerera kwemushandisi kana kwakasimba kwepakati manejimendi. Mafungiro ekuti "zvigadzike uye uzvikanganwe", kana zvakatoipisisa, nzira yekuti "tichasvika pairi chikamu chinotevera", inzira yekurerutsa. Iyo CISA nguva yekupedzisira yeNetScaler, ikozvino yapfuura, chiyeuchidzo chakasimba cheiyi inertia.
4. ** Chengetedzo seKufunga Kwapera:** Pasinei nekutaura kwese, chengetedzo ichiri kuwanzoonekwa senzvimbo inodhura, chipingamupinyi chekuvandudza, kana dambudziko rinogadziriswa mushure me kukanganisa. Kudyara mari mukuvhima kwekutyisidzira, kutonga kwakasimba kwekusagadzikana, uye kuenderera mberi kwedzidzo yechengetedzo kunowanzo kuderera kana kuchienzaniswa nechiitiko chinoitika mushure mechiitiko.

Beyond the Patch: Kushevedzwa kweStrategic Overhaul

Kungoudza sangano kuti "chigamba pakarepo" kwakafanana nekuudza mumwe munhu ari kunetseka mumvura yakadzika kuti "awedzere kushambira." Izvo zvinodiwa, asi hazvigadzirise dambudziko riripo. Tinoda shanduko yakakosha pamabatiro atinoita chengetedzo.

• ** Fungidzira Compromise: ** Iyo yekare perimeter yekudzivirira modhi yakafa. Fungidzira yako NetScaler * yakatyorwa. Fungidzira vashandisi vako 'Chrome browser * ichashandiswa*. Shandisa simba retiweki segmentation, mukana wekuwana mukana, uye kuenderera mberi kwekutarisa kwechiito chisinganzwisisike. Kuvhima kutyisidzira hakusi umbozha; chinhu chinodiwa. Tarisa zviratidzo zvisinganzwisisike: zvisingawanzo kubuda zvinongedzo kubva kune yako NetScaler, nyowani mushandisi maakaundi, isingatarisirwe maitiro ekuita.
• Otomatiki Zvese Zvinogoneka: Chigamba manejimendi emagumo seChrome anofanira kunge ari otomatiki uye nekumisikidzwa. Zvezvivakwa zvakakosha seNetScaler, nepo zvakanyanya kuoma, maitiro acho anofanirwa kukwenenzverwa, kuyedzwa, uye kudzokororwa. Nguva yekuzorora yekuvandudza kuchengetedza inofanirwa kurongwa uye kugamuchirwa semutengo wekuita bhizinesi, kwete kudziviswa zvachose.
• ** Isa mari muKusimba, Kwete Kungodzivirira: ** Zvirongwa zvekupindura zvezviitiko zvinoda kuongororwa kuhondo. Unogona here kuona pakatyorwa nekukurumidza? Unogona kuzvibata here? Unogona here kupora pasina kubhadhara rudzikinuro? Iyi ndiyo mibvunzo inokosha kana kudzivirira kunenge kwakundikana.
• Kuda Zvirinani kubva kune Vatengesi: Nepo Google iri kupeta, kuwanda kwezero-mazuva muChrome kunoratidza kudiwa kwekuongorora kwakadzama kwezvivakwa uye pamwe chirongwa chehukasha chemukati. Kune vatengesi vezvivakwa zvakakosha seCitrix, tarisiro inofanirwa kunge yakanyanya kukwirira. Zvigadzirwa zvavo ndizvo chaizvo zvemusana wekushanda kwebhizinesi.

Chokwadi ndechekuti, izvi hazvisi zviitiko zvega. Iwo zviratidzo zvedhijitari ecosystem pasi penguva dzose, kurwiswa kwakaoma. Maziviro "akakosha" acharamba achiuya. Mubvunzo hausi wekuti kana sangano rako rinenge rakanangana, asi ini, uye kuti wafamba kupfuura reactive scramble kuvaka dziviriro yakasimba zvechokwadi. Kana iyo yakapfuura CISA zuva rekupedzisira reNetScaler risina kusimbaradza nzira yako yekuchengetedza, inguva yekuongorora zvakare kwakakomba.

Zvinyorwa

[1] CISA Inozivikanwa Yakashandiswa Kukuvara Kwematambudziko — https://www.cisa.gov/known-exploited-vulnerabilities-catalog [2] Kutyisidzira Vatambi Vanoshandisa Citrix NetScaler ADC uye Citrix NetScaler Gateway Vulnerability (CVE-2023-4966) - https://www.cisa.gov/news-events/alerts/2023/10/05/threat-actors-exploiting-citrix-netscaler-adc-and-citrix-netscaler-gateway-vulnerability [3] Emergency Directive 23-02: Mitigate Citrix NetScaler ADC uye Gateway Vulnerability - https://www.cisa.gov/news-events/directives/emergency-directive-23-02-mitigate-citrix-netscaler-adc-and-gateway-vulnerability [4] Yakagadzikana Channel Yekuvandudza yeDesktop (CVE-2024-4947) - https://chromereleases.googleblog.com/2024/05/stable-channel-update-for-desktop_13.html [5] Citrix NetScaler ADC uye Citrix NetScaler Gateway Chengetedzo Bulletin yeCVE-2023-4966 uye CVE-2023-4967 - https://support.citrix.com/article/CTX579459/citrix-netscaler-adc-and-citrix-netscaler-gateway-security-bulletin-for-cve20234966-and-cve20234967