CVE-2024-27198 e CVE-2024-27199 Detecção: Vulnerabilidades Críticas no JetBrains TeamCity Representam Riscos Crescentes com Exploits em Curso

Veronika Zahorulko Analista de Mercado de Detecção

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Alguns meses após a exploração maciça de CVE-2023-42793, novas vulnerabilidades críticas no JetBrains TeamCity ganharam destaque, expondo os usuários afetados aos riscos de comprometimento completo dos sistemas impactados. Rastreado como CVE-2024-27198 e CVE-2024-27199, as falhas de segurança descobertas podem dar aos atacantes não autenticados o sinal verde para obter controle administrativo do servidor. Com os exploits PoC do CVE-2024-27198 disponíveis publicamente e mais em andamento, os defensores alertam organizações e usuários individuais sobre os crescentes riscos de ataques em andamento que exploram essas falhas.

Detectar Tentativas de Exploração do CVE-2024-27198 e CVE-2024-27199

Diante dos riscos crescentes de tentativas de exploração de vulnerabilidades de segurança no JetBrains TeamCity, incluindo as falhas críticas recentemente descobertas rastreadas como CVE-2024-27198 e CVE-2024-27199, é imperativo que os defensores tomem medidas imediatas para defender proativamente contra intrusões adversárias. A Equipe SOC Prime lançou recentemente um novo algoritmo de detecção para detectar tentativas de exploração do CVE-2024-27198 e CVE-2024-27199. Faça login na Plataforma SOC Prime para acessar o item de conteúdo dedicado com base no código PoC recentemente lançado:

Possível Tentativa de Exploração do CVE-2024-27198/CVE-2024-27199 (Bypass de Autenticação do JetBrains TeamCity) (via servidor web)

A detecção está alinhada com MITRE ATT&CK® v.14.1 endereçando a tática de Acesso Inicial e a técnica correspondente Explorar Aplicações Voltadas para o Público (T1190). O algoritmo de detecção é compatível com 18 plataformas de análise de segurança na nuvem e locais para simplificar a tradução de consultas entre plataformas.

Organizações que buscam aumentar sua resiliência cibernética contra ameaças emergentes de qualquer escala, incluindo vulnerabilidades críticas que constantemente desafiam os defensores, podem aproveitar a coleção inteira de ideias de detecção para CVEs clicando no botão Explorar Detecções . Todos os algoritmos de detecção são aprimorados com metadados abrangentes e inteligência personalizada para economizar segundos na investigação de ameaças.

Explorar Detecções

Análise do CVE-2024-27198 e CVE-2024-27199

Em fevereiro de 2024, pesquisadores do Rapid7 descobriram e relataram duas novas vulnerabilidades críticas de bypass de autenticação impactando o servidor CI/CD do JetBrains TeamCity. As falhas conhecidas como CVE-2024-27198 and CVE-2024-27199 permitem que atacantes com acesso HTTP(S) a um servidor TeamCity contornem verificações de autenticação e obtenham controle administrativo sobre o servidor comprometido. O CVE-2024-27198, com um escore CVSS chegando a 9.8, é uma falha no componente web do TeamCity decorrente de um problema de caminho alternativo, enquanto o CVE-2024-27199 é uma vulnerabilidade menos severa com um escore CVSS de 7.3 decorrente de um problema de travessia de caminho.

O CVE-2024-27198 pode resultar no comprometimento total de um servidor TeamCity alvo, potencialmente levando a RCE e dando aos atacantes o sinal verde para iniciar um ataque à cadeia de suprimentos. Quanto ao CVE-2024-27199, ele pode ser armado por adversários para lançar ataques DoS ou interceptar conexões de clientes.

As vulnerabilidades que afetam todas as versões On-Premises do TeamCity até 2023.11.3 foram corrigidas na versão mais recente 2023.11.4. Para minimizar os riscos de ataques potenciais, o fornecedor também lançou um patch de segurança plugin para permitir que clientes que não podem atualizar para a versão mais recente protejam seu ambiente de ameaças relacionadas.

Com o código de exploit PoC do CVE-2024-27198 publicamente acessível no GitHub, os riscos de ataques levando à tomada completa do servidor estão crescendo, o que estimula uma ultra-responsividade por parte dos defensores. Aproveitando o Detective de Ataque da SOC Prime, engenheiros de segurança podem elevar a postura de cibersegurança da organização identificando atempadamente pontos cegos da defesa cibernética, identificando os dados adequados para coletar para abordar essas lacunas e otimizar o ROI do SIEM, e priorizando procedimentos de detecção antes que os adversários tenham a chance de atacar.

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 e CVE-2024-27199 Detecção: Vulnerabilidades Críticas no JetBrains TeamCity Representam Riscos Crescentes com Exploits em Curso

Detectar Tentativas de Exploração do CVE-2024-27198 e CVE-2024-27199

Análise do CVE-2024-27198 e CVE-2024-27199

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