CVE-2024-27198 및 CVE-2024-27199 탐지: JetBrains TeamCity의 중대한 취약점, 진행 중인 공격으로 위험도 상승

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Veronika Telychko

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3월 06, 2024 · 3 분 읽기

CVE-2024-27198 및 CVE-2024-27199 탐지: JetBrains TeamCity의 중대한 취약점, 진행 중인 공격으로 위험도 상승

대규모 악용이 발생한 지 몇 달 후, CVE-2023-42793에 이어 JetBrains TeamCity의 새로운 치명적인 취약점이 주목받게 되었으며, 영향을 받는 사용자는 시스템이 완전히 손상될 수 있는 위험에 노출되었습니다. CVE-2024-27198 및 CVE-2024-27199로 추적되는 발견된 보안 결점은 인증되지 않은 공격자가 서버에 대한 관리자 제어 권한을 획득할 수 있도록 허용합니다. CVE-2024-27198의 PoC 익스플로잇이 공개적으로 제공되고 추가 개발 중이므로, 방어자들은 조직과 개인 사용자에게 이러한 결점을 무기화한 실전 공격의 증가하는 위험을 경고하고 있습니다.

CVE-2024-27198 및 CVE-2024-27199 악용 시도 탐지

JetBrains TeamCity의 보안 취약점의 악용 시도가 증가하는 상황에서, 새롭게 발견된 치명적인 결점(CVE-2024-27198 및 CVE-2024-2719로 추적됨)을 포함하여 방어자들은 즉각적인 조치를 취해 적의 침입에 적극적으로 방어해야 합니다. SOC Prime 팀은 최근 CVE-2024-27198 및 CVE-2024-2719 악용 시도를 탐지하기 위한 새로운 탐지 알고리즘을 출시했습니다. 최근 출시된 PoC 코드를 기반으로 한 전용 콘텐츠 항목에 액세스하려면 SOC Prime 플랫폼에 로그인하십시오:

CVE-2024-27198/CVE-2024-27199 (JetBrains TeamCity 인증 우회) 악용 시도 (웹 서버를 통해)

이 탐지기는 MITRE ATT&CK® v.14.1 에 등록된 초기 접근 전술 및 해당 공개-facing 애플리케이션(기술 T1190) 공격 탐지와 일치합니다. 이 탐지 알고리즘은 18개의 클라우드 및 온프레미스 보안 분석 플랫폼과 호환되어 플랫폼 간 쿼리 번역을 단순화합니다.

크리티컬 취약점을 포함하여 지속적으로 방어자를 위협하는 신규 위협에 대한 사이버 회복력을 강화하고자 하는 조직은 CVEs에 대한 전체 탐지 아이디어 컬렉션을 사용하여 ” 탐지 탐색” 버튼을 클릭하십시오. 모든 탐지 알고리즘은 위협 조사 시간을 단축하려는 포괄적인 메타데이터와 정밀한 정보로 강화됩니다.

탐지 탐색”

CVE-2024-27198 및 CVE-2024-27199 분석

2024년 2월, Rapid7 연구진이 JetBrains TeamCity CI/CD 서버에 영향을 미치는 두 가지 새로운 치명적인 인증 우회 취약점을 발견하고 보고했습니다. 알려진 결함인 및 및 and CVE-2024-27199 는 HTTP(S) 접근 권한을 가진 공격자가 TeamCity 서버에서 인증 체크를 우회하고 손상된 서버에 대한 관리자 제어 권한을 획득할 수 있게 허용합니다. CVE-2024-27198는 9.8의 CVSS 점수를 기록하며, 대체 경로 문제에서 비롯된 TeamCity의 웹 구성 요소의 결함입니다. 반면, CVE-2024-27199는 경로 이동 문제에서 비롯되며 7.3의 CVSS 점수를 기록해 덜 심각한 취약점입니다.

CVE-2024-27198는 대상 TeamCity 서버의 완전한 손상을 초래하여 RCE로 이어질 수 있으며, 공격자에게 공급망 공격을 감행할 수 있는 초록 불빛을 줍니다. 반면 CVE-2024-27199는 적들이 DoS 공격을 감행하거나 클라이언트 연결을 가로채는 데 이용될 수 있습니다.

모든 TeamCity 온프레미스 버전(2023.11.3까지)에 영향을 미치는 취약점은 최신 버전 2023.11.4에 패치되었습니다. 잠재적 공격 위험을 최소화하기 위해, 벤더는 보안 패치 플러그인을 출시하여 최신 버전으로 업그레이드 할 수 없는 고객이 관련 위협으로부터 환경을 보호할 수 있도록 합니다.

GitHub에서 CVE-2024-27198 PoC 익스플로잇 코드 가 공개적으로 접근 가능하게 됨으로써, 전체 서버 장악으로 이어지는 공격 위험이 증가하고 있으며, 이는 방어자들로 하여금 대응속도를 강화시키고 있습니다. 이를 활용하여 SOC Prime의 공격 탐지기를 통해 보안 엔지니어는 기관의 사이버 보안 태세를 강화하여, 사이버 방어의 맹점을 적시에 식별하고, 이러한 격차를 해결할 데이터를 수집하며 SIEM의 ROI를 최적화하고, 적들이 공략하기 전에 탐지 절차를 우선시할 수 있습니다.

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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.

CVE-2024-27198 및 CVE-2024-27199 탐지: JetBrains TeamCity의 중대한 취약점, 진행 중인 공격으로 위험도 상승

CVE-2024-27198 및 CVE-2024-27199 악용 시도 탐지

CVE-2024-27198 및 CVE-2024-27199 분석

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