Spring4Shell 탐지: 악명 높은 Log4j의 발자취를 따르는 새로운 자바 취약점

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Anastasiia Yevdokimova

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3월 31, 2022 · 3 분 읽기

Spring4Shell 탐지: 악명 높은 Log4j의 발자취를 따르는 새로운 자바 취약점

봄이 오면 버그가 피어납니다. 2022년 3월 29일에 스프링 클라우드 함수의 소설적이고 매우 심각한 결함이 레이더에 잡혔습니다. 쉽게 악용할 수 있는 취약점이 Java 애플리케이션에서 사용되는 프레임워크인 스프링 코어 모듈에 영향을 미치며, JDK9+가 필요합니다. 이 스프링 코어 취약점이 악용되면 해커들은 원격 코드 실행(RCE) 기반 공격을 수행할 수 있게 됩니다.

현재까지 Spring4Shell은 중요한 Log4j RCE 결함.

Spring4Shell 탐지

시스템이 손상되지 않았는지 확인하기 위해, SOC 프라임 팀과 Florian Ro가 함께 발표한 다음 규칙을 활용하십시오.th. The f다음 규칙은 Spring Core RCE 취약점 악용 시도를 탐지합니다.

Spring4Shell 악용 시도에 의한 초기 접근 가능성 (웹 경유)

Spring4Shell 악용 시도에 의한 내부 횡적 이동 가능성 (Windows) (프로세스 생성 경유)

Spring4Shell 악용 시도에 의한 내부 횡적 이동 가능성 (Linux) (프로세스 생성 경유)

위의 시그마 탐지 외에도 Florian Roth가 발표한 YARA 규칙을 활용할 수 있습니다:

Spring4Shell 악용 패턴 가능성 – YARA 규칙

SOC 프라임 플랫폼의 위협 탐지 마켓플레이스 저장소에서 Spring4Shell 관련 탐지 콘텐츠 업데이트를 여기에서. 탐지 콘텐츠 개발자입니까? 위협 바운티 프로그램의 힘으로 사이버 방어 커뮤니티의 일원이 되어 귀하의 귀중한 입력에 대해 꾸준한 보상을 받고 사이버 보안 커뮤니티의 힘을 활용하십시오.

모든 콘텐츠 보기 위협 바운티 참여

Spring4Shell 익스플로잇 분석

현재 활발히 세를 얻고 있는 새로운 제로데이 Spring4Shell 취약점은 2022년 3월 29일, Java에서 가장 수요가 높은 프레임워크 중 하나인 스프링 프레임워크에서 발견되었습니다. 스프링 애플리케이션은 개발자들에게 분산 시스템의 일반적인 패턴을 구축할 도구를 제공합니다. 새로운 스프링 클라우드 취약점은 2021년 12월 큰 혼란을 일으킨 Apache Log4j2 취약점과 유사하여 이미 Spring4Shell이라고 불리게 되었습니다.

손상된 시스템에 대한 심각한 SpringShell의 영향은 불가피합니다: 이 익스플로잇은 Log4Shell처럼 매우 쉽게 실행됩니다. 이후, 적들은 인터넷을 스캔하고 취약한 서버를 자동으로 악용하는 스크립트를 작성할 수 있으며, 이는 취약성 악용이 취약한 앱에 간단히 HTTP POST를 수행하는 것뿐이므로 가능합니다. 위협 행위자들은 이러한 결함을 이용하여 서버에서 명령을 실행할 수 있으며, 이를 통해 감염된 장치를 완전히 원격으로 제어할 수 있습니다.

게다가, 스프링 클라우드 함수는 AWS Lambda 및 Google Cloud Functions와 같은 클라우드 서버리스 함수에서 사용될 수 있어, 이 취약점을 최대한 활용하고자 하는 해커들에게 클라우드 계정이 쉬운 표적이 됩니다.

스프링 프로젝트의 이 결함은 성공적으로 악용되기 위해 특정한 설정에 의존하는 것은 말할 필요도 없습니다. 어떤 경우에는, 공격자가 해야 할 일은 단지 대상 시스템에 특별히 제작된 POST 요청을 제출하기만 하면 되기 때문에 이 결함을 악용하는 것이 간단합니다. 그러나 이러한 설정을 악용하려면 공격자가 스프링 애플리케이션을 목표로 하여 페이로드를 적절히 오염시키기 위해 추가 시간과 리소스 투자가 필요합니다.

2022년 3월 31일 현재, 이 특정 결함은 CVE와 연결되어 있지 않지만, CVE-2022-22963 및 CVE-2022-22950과 관련하여 스프링 프로젝트와 관련된 새로 공개된 두 개의 취약점이 있습니다.

실제 애플리케이션에 대한 실제적인 영향과 그로 인한 위험은 아직 확정되지 않았습니다.

참여하기 SOC 프라임의 ‘코드로서의 탐지’ 플랫폼에 참여하여 위협 환경 발전에 대한 최신 업데이트를 지속적으로 얻고, 위협 커버리지를 개선하며, MITRE ATT&CK 매트릭스와 관련된 가장 관련성 있는 탐지 콘텐츠에 접근하여 공격자보다 앞서 나가십시오. 플랫폼

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Name	Descripiton
PHPSESSID	Preserves user session state across page requests. Cookie generated by applications based on the PHP language. This is a general purpose identifier used to maintain user session variables. It is normally a random generated number, how it is used can be specific to the site, but a good example is maintaining a logged-in status for a user between pages.
sp_i	Used to store information about authenticated User.
sp_r	Used to store information about authenticated User.
sp_a	Used to store information about authenticated User.

Name	Descripiton
tuuid	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded.
tuuid_last_update	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded.
um	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded.
umeh	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded.
na_sc_x	Used by the social sharing platform AddThis to keep a record of parts of the site that has been visited in order to recommend other parts of the site.
APID	Collects anonymous data related to the user's visits to the website.
IDSYNC	Collects anonymous data related to the user's visits to the website.
_cc_aud	Collects anonymous statistical data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The purpose is to segment the website's users according to factors such as demographics and geographical location, in order to enable media and marketing agencies to structure and understand their target groups to enable customised online advertising.
_cc_cc	Collects anonymous statistical data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The purpose is to segment the website's users according to factors such as demographics and geographical location, in order to enable media and marketing agencies to structure and understand their target groups to enable customised online advertising.
_cc_dc	Collects anonymous statistical data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The purpose is to segment the website's users according to factors such as demographics and geographical location, in order to enable media and marketing agencies to structure and understand their target groups to enable customised online advertising.
_cc_id	Collects anonymous statistical data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The purpose is to segment the website's users according to factors such as demographics and geographical location, in order to enable media and marketing agencies to structure and understand their target groups to enable customised online advertising.
dpm	Via a unique ID that is used for semantic content analysis, the user's navigation on the website is registered and linked to offline data from surveys and similar registrations to display targeted ads.
acs	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded, with the purpose of displaying targeted ads.
clid	Collects anonymous data related to the user's visits to the website, such as the number of visits, average time spent on the website and what pages have been loaded, with the purpose of displaying targeted ads.
KRTBCOOKIE_#	Registers a unique ID that identifies the user's device during return visits across websites that use the same ad network. The ID is used to allow targeted ads.
PUBMDCID	Registers a unique ID that identifies the user's device during return visits across websites that use the same ad network. The ID is used to allow targeted ads.
PugT	Registers a unique ID that identifies the user's device during return visits across websites that use the same ad network. The ID is used to allow targeted ads.
ssi	Registers a unique ID that identifies a returning user's device. The ID is used for targeted ads.
_tmid	Registers a unique ID that identifies the user's device upon return visits. The ID is used to target ads in video clips.
wam-sync	Used by the advertising platform Weborama to determine the visitor's interests based on pages visits, content clicked and other actions on the website.
wui	Used by the advertising platform Weborama to determine the visitor's interests based on pages visits, content clicked and other actions on the website.
AFFICHE_W	Used by the advertising platform Weborama to determine the visitor's interests based on pages visits, content clicked and other actions on the website.
B	Collects anonymous data related to the user's website visits, such as the number of visits, average time spent on the website and what pages have been loaded. The registered data is used to categorise the users' interest and demographical profiles with the purpose of customising the website content depending on the visitor.
1P_JAR	These cookies are used to gather website statistics, and track conversion rates.
APISID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
HSID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
NID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
SAPISID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
SID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
SIDCC	Security cookie to protect users data from unauthorised access.
SSID	Google set a number of cookies on any page that includes a Google reCAPTCHA. While we have no control over the cookies set by Google, they appear to include a mixture of pieces of information to measure the number and behaviour of Google reCAPTCHA users.
__utmx	This cookie is associated with Google Website Optimizer, a tool designed to help site owners improve their wbesites. It is used to distinguish between two varaitions a webpage that might be shown to a visitor as part of an A/B split test. This helps site owners to detemine which version of a page performs better, and therefore helps to improve the website.
__utmxx	This cookie is associated with Google Website Optimizer, a tool designed to help site owners improve their wbesites. It is used to distinguish between two varaitions a webpage that might be shown to a visitor as part of an A/B split test. This helps site owners to detemine which version of a page performs better, and therefore helps to improve the website.

Name	Descripiton
_hjid	Hotjar cookie. This cookie is set when the customer first lands on a page with the Hotjar script. It is used to persist the random user ID, unique to that site on the browser. This ensures that behavior in subsequent visits to the same site will be attributed to the same user ID.
_hjIncludedInSample	This cookie is associated with web analytics functionality and services from Hot Jar, a Malta based company. It uniquely identifies a visitor during a single browser session and indicates they are included in an audience sample.
intercom-id-[xxx]	This cookie is used by Intercom as a session so that users can continue a chat as they move through the site.
intercom-session-[xxx]	Used to keeping track of sessions and remember logins and conversations.
demdex	Via a unique ID that is used for semantic content analysis, the user's navigation on the website is registered and linked to offline data from surveys and similar registrations to display targeted ads.
CookieConsent	Stores the user's cookie consent state for the current domain.
__cfduid	Used by the content network, Cloudflare, to identify trusted web traffic.
ss	These cookies enable the website to provide enhanced functionality and personalisation . They may be set by us or by third party providers whose services we have added to our pages. These services may include the Live Chat facility, Contact Us form(s), the Product Quotation forms and submission process, and the Email Newsletter sign up functionality .

Name	Descripiton
_ga	This cookie name is asssociated with Google Universal Analytics - which is a significant update to Google's more commonly used analytics service. This cookie is used to distinguish unique users by assigning a randomly generated number as a client identifier. It is included in each page. Registers a unique ID that is used to generate statistical data on how the visitor uses the website. request in a site and used to calculate visitor, session and campaign data for the sites analytics reports. By default it is set to expire after 2 years, although this is customisable by website owners.
_gat	Used by Google Analytics to throttle request rate. This cookie name is associated with Google Universal Analytics, according to documentation it is used to throttle the request rate - limiting the collection of data on high traffic sites. It expires after 10 minutes.
_gid	This cookie name is asssociated with Google Universal Analytics. This appears to be a new cookie and as of Spring 2017 no information is available from Google. It appears to store and update a unique value for each page visited. Registers a unique ID that is used to generate statistical data on how the visitor uses the website.
IDE	Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.
r/collect	Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.
test_cookie	Used to check if the user's browser supports cookies.
collect	Used to send data to Google Analytics about the visitor's device and behaviour. Tracks the visitor across devices and marketing channels.
ads/user-lists/#	These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites.
c	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.
khaos	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.
put_#	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.
rpb	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.
rpx	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.
tap.php	Registers anonymised user data, such as IP address, geographical location, visited websites, and what ads the user has clicked, with the purpose of optimising ad display based on the user's movement on websites that use the same ad network.

Spring4Shell 탐지: 악명 높은 Log4j의 발자취를 따르는 새로운 자바 취약점

Spring4Shell 탐지

Spring4Shell 익스플로잇 분석

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Spring4Shell 탐지: 악명 높은 Log4j의 발자취를 따르는 새로운 자바 취약점

Spring4Shell 탐지

Spring4Shell 익스플로잇 분석

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