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CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0

The Jupyter Server provides the backend for Jupyter web applications. Jupyter Server on Windows has a vulnerability that lets unauthenticated attackers leak the NTLMv2 password hash of the Windows user running the Jupyter server. An attacker can crack this password to gain access to the Windows machine hosting the Jupyter server, or access other network-accessible machines or 3rd party services using that credential. Or an attacker perform an NTLM relay attack without cracking the credential to gain access to other network-accessible machines. This vulnerability is fixed in 2.14.1. • https://github.com/jupyter-server/jupyter_server/commit/79fbf801c5908f4d1d9bc90004b74cfaaeeed2df https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-hrw6-wg82-cm62 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVSS: 4.3EPSS: 0%CPEs: 1EXPL: 0

The Jupyter Server provides the backend (i.e. the core services, APIs, and REST endpoints) for Jupyter web applications like Jupyter notebook, JupyterLab, and Voila. Unhandled errors in API requests coming from an authenticated user include traceback information, which can include path information. There is no known mechanism by which to trigger these errors without authentication, so the paths revealed are not considered particularly sensitive, given that the requesting user has arbitrary execution permissions already in the same environment. A fix has been introduced in commit `0056c3aa52` which no longer includes traceback information in JSON error responses. For compatibility, the traceback field is present, but always empty. • https://github.com/jupyter-server/jupyter_server/commit/0056c3aa52cbb28b263a7a609ae5f17618b36652 https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-h56g-gq9v-vc8r https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/62LO7PPIAMLIDEKUOORXLHKLGA6QPL77 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FG2JWZI5KPUYMDPS53AIFTZJWZD3IT6I • CWE-209: Generation of Error Message Containing Sensitive Information •

CVSS: 6.1EPSS: 0%CPEs: 1EXPL: 0

jupyter-server is the backend for Jupyter web applications. Open Redirect Vulnerability. Maliciously crafted login links to known Jupyter Servers can cause successful login or an already logged-in session to be redirected to arbitrary sites, which should be restricted to Jupyter Server-served URLs. This issue has been addressed in commit `29036259` which is included in release 2.7.2. Users are advised to upgrade. • https://github.com/jupyter-server/jupyter_server/commit/290362593b2ffb23c59f8114d76f77875de4b925 https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-r726-vmfq-j9j3 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NRP7DNZYVOIA4ZB3U3ZWKTFZEPYWNGCQ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XDKQAWQN6SQTOVACZNXYKEHWQXGG4DOF • CWE-601: URL Redirection to Untrusted Site ('Open Redirect') •

CVSS: 6.1EPSS: 0%CPEs: 1EXPL: 0

jupyter-server is the backend for Jupyter web applications. Improper cross-site credential checks on `/files/` URLs could allow exposure of certain file contents, or accessing files when opening untrusted files via "Open image in new tab". This issue has been addressed in commit `87a49272728` which has been included in release `2.7.2`. Users are advised to upgrade. Users unable to upgrade may use the lower performance `--ContentsManager.files_handler_class=jupyter_server.files.handlers.FilesHandler`, which implements the correct checks. jupyter-server es el backend de las aplicaciones web de Jupyter. • https://github.com/jupyter-server/jupyter_server/commit/87a4927272819f0b1cae1afa4c8c86ee2da002fd https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-64x5-55rw-9974 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NRP7DNZYVOIA4ZB3U3ZWKTFZEPYWNGCQ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XDKQAWQN6SQTOVACZNXYKEHWQXGG4DOF • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE-284: Improper Access Control CWE-306: Missing Authentication for Critical Function •

CVSS: 9.0EPSS: 0%CPEs: 1EXPL: 0

Jupyter Server provides the backend (i.e. the core services, APIs, and REST endpoints) for Jupyter web applications like Jupyter Notebook. Prior to version 1.17.1, if notebook server is started with a value of `root_dir` that contains the starting user's home directory, then the underlying REST API can be used to leak the access token assigned at start time by guessing/brute forcing the PID of the jupyter server. While this requires an authenticated user session, this URL can be used from a cross-site scripting payload or from a hooked or otherwise compromised browser to leak this access token to a malicious third party. This token can be used along with the REST API to interact with Jupyter services/notebooks such as modifying or overwriting critical files, such as .bashrc or .ssh/authorized_keys, allowing a malicious user to read potentially sensitive data and possibly gain control of the impacted system. This issue is patched in version 1.17.1. • https://github.com/jupyter-server/jupyter_server/security/advisories/GHSA-q874-g24w-4q9g • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •