{"vulnerability": "CVE-2021-2123", "sightings": [{"uuid": "cbe82358-b0df-42bf-b5cc-b031ccc5856f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "confirmed", "source": "https://github.com/projectdiscovery/nuclei-templates/tree/main/http/cves/2021/CVE-2021-21234.yaml", "content": "", "creation_timestamp": "2023-04-27T09:58:59.000000Z"}, {"uuid": "ce6899f7-08bc-4ca4-b20d-3eb4c95c1c22", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2024-12-01)", "content": "", "creation_timestamp": "2024-12-01T00:00:00.000000Z"}, {"uuid": "b269ab02-f677-42ba-b77b-e9c518f65d4b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2025-03-12)", "content": "", "creation_timestamp": "2025-03-12T00:00:00.000000Z"}, {"uuid": "82658008-a671-4e6d-914d-894b876e03a1", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2025-05-01)", "content": "", "creation_timestamp": "2025-05-01T00:00:00.000000Z"}, {"uuid": "01255b18-a85a-40ab-9adb-0f2e8a7a64dc", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2025-05-19)", "content": "", "creation_timestamp": "2025-05-19T00:00:00.000000Z"}, {"uuid": "516f6fd2-2ba0-4dd4-a2b8-286a9f29df57", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2025-04-19)", "content": "", "creation_timestamp": "2025-04-19T00:00:00.000000Z"}, {"uuid": "0a726401-7fca-4b7c-b728-7bd0c3d46c6c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21238", "type": "seen", "source": "https://t.me/arpsyndicate/4659", "content": "#ExploitObserverAlert\n\nCVE-2021-21238\n\nDESCRIPTION: Exploit Observer has 9 entries in 3 file formats related to CVE-2021-21238. PySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0.\n\nFIRST-EPSS: 0.001070000\nNVD-IS: 3.6\nNVD-ES: 2.8\nARPS-EXPLOITABILITY: 0.6908515", "creation_timestamp": "2024-04-13T13:18:43.000000Z"}, {"uuid": "db251a7c-c5eb-4e92-b509-b42d6683e552", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2025-08-18)", "content": "", "creation_timestamp": "2025-08-18T00:00:00.000000Z"}, {"uuid": "7e004646-1fb9-44b4-ac1f-19ff30102b20", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2025-10-22)", "content": "", "creation_timestamp": "2025-10-22T00:00:00.000000Z"}, {"uuid": "fd51c928-94c0-46aa-8c75-52ebc6235a75", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2026-03-08)", "content": "", "creation_timestamp": "2026-03-08T00:00:00.000000Z"}, {"uuid": "a5bc227d-b51b-4ec8-9122-7a682363b98d", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2026-04-14)", "content": "", "creation_timestamp": "2026-04-14T00:00:00.000000Z"}, {"uuid": "a6d326f3-345d-4491-bde5-896a00e7638f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21239", "type": "published-proof-of-concept", "source": "Telegram/k9l6whAFym9ZbJh5WMNbuyJuC8dcnnMOM_Gxizovh2wCYo8", "content": "", "creation_timestamp": "2025-08-03T09:00:06.000000Z"}, {"uuid": "18730f17-f6f6-4038-b2e7-ae837c399c09", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2025-06-10)", "content": "", "creation_timestamp": "2025-06-10T00:00:00.000000Z"}, {"uuid": "80c9e164-584e-479b-ba50-9247ea3dbfea", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2025-07-17)", "content": "", "creation_timestamp": "2025-07-17T00:00:00.000000Z"}, {"uuid": "c985bca3-b7b1-40ed-884f-c22004961acf", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2025-07-24)", "content": "", "creation_timestamp": "2025-07-24T00:00:00.000000Z"}, {"uuid": "06362094-af22-4dca-a194-c028dd860039", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "seen", "source": "The Shadowserver (honeypot/common-vulnerabilities) - (2026-03-26)", "content": "", "creation_timestamp": "2026-03-26T00:00:00.000000Z"}, {"uuid": "bbb291a5-cb53-46dc-b360-e2a878e40d82", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2026-01-12)", "content": "", "creation_timestamp": "2026-01-12T00:00:00.000000Z"}, {"uuid": "49e7c67d-e311-4047-9eb5-6a53d6c27215", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "published-proof-of-concept", "source": "https://t.me/cKure/8290", "content": "\u25a0\u25a0\u25a0\u25a1\u25a1 CVE-2021-21234 Spring Boot Actuator Logview Directory Traversal.\n\nhttps://pyn3rd.github.io/2021/10/25/CVE-2021-21234-Spring-Boot-Actuator-Logview-Directory-Traversal/", "creation_timestamp": "2021-12-01T20:37:44.000000Z"}, {"uuid": "9ab91752-6291-44cd-b79d-9e215a86633e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "published-proof-of-concept", "source": "Telegram/KY4PVd45dzhnz_l3x8aBIZwbkHWB1w1Cp1_7dnD8vo88jQ", "content": "", "creation_timestamp": "2023-11-20T04:04:42.000000Z"}, {"uuid": "d5e0f4f7-7b81-4fea-9c92-0698343e93b6", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-2123", "type": "seen", "source": "https://t.me/cibsecurity/22369", "content": "\u203c CVE-2021-2123 \u203c\n\nVulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version that is affected is Prior to 6.1.18. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle VM VirtualBox accessible data. CVSS 3.1 Base Score 3.2 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-01-20T18:33:37.000000Z"}, {"uuid": "2605b18d-3d78-49dd-9162-9c2ecf14cd6f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "published-proof-of-concept", "source": "https://t.me/freelearningtech/556", "content": "FROM INTERNET\n\n1)Easy SQLi in Amazon subsidiary using Sqlmap\nhttps://hector0x.medium.com/easy-sqli-in-amazon-subsidiary-using-sqlmap-ff469013671b\n\n2)Bypass File Upload Restrictions\nHow to Get a Shell on a Website using a File [Tutorial]\nhttps://technicalsurendra.medium.com/bypass-file-upload-restrictions-f30c88e1fccb\n\n3)Cross-site request forgery (CSRF)\nhttps://medium.com/@shubhamkumarks1999/cross-site-request-forgery-csrf-403574f8aded\n\n4)How to Exploit Public Firebase Realtime Database using REST API\nhttps://masturf.medium.com/how-to-exploit-firebase-realtime-database-using-rest-api-34885160fa55\n\n5)CVE-2021-21234 Spring Boot Actuator Logview Directory Traversal\nhttps://pyn3rd.github.io/2021/10/25/CVE-2021-21234-Spring-Boot-Actuator-Logview-Directory-Traversal/\n\n6)Awesome PostgreSQL\nhttps://reconshell.com/awesome-postgresql/\n\n7)Web cache poisoning bug discovered in Symfony PHP framework\nhttps://portswigger.net/daily-swig/web-cache-poisoning-bug-discovered-in-symfony-php-framework\n\n8)Artificial Intelligence\nhttps://aryacollegeludhiana.in/E_BOOK/computer/Artificial_Intelligence.pdf\n\n9)Domain Lowering - A Technique to by pass Same Origin Policy (SOP)\nhttps://securityzines.com/flyers/dl.html?utm_campaign=Security%20Zines&utm_medium=email&utm_source=Revue%20newsletter\n\n:OSCP EXAM:\n1)OSCP Exam Change\nhttps://www.offensive-security.com/offsec/oscp-exam-structure/?utm_content=189109584&utm_medium=social&utm_source=facebook&hss_channel=fbp-132187200151961\n2)2022 OSCP EXAM CHANGES - Goodbye Buffer Overflow, Hello Active Directory\nhttps://www.youtube.com/watch?v=uvqdSGlwEkA", "creation_timestamp": "2021-12-03T16:24:33.000000Z"}, {"uuid": "2011dd80-2903-4922-9ad1-237b291e4156", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21238", "type": "seen", "source": "https://t.me/cibsecurity/22495", "content": "\u203c CVE-2021-21238 \u203c\n\nPySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. All users of pysaml2 that need to validate signed SAML documents are impacted. The vulnerability is a variant of XML Signature wrapping because it did not validate the SAML document against an XML schema. This allowed invalid XML documents to be processed and such a document can trick pysaml2 with a wrapped signature. This is fixed in PySAML2 6.5.0.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-01-21T18:28:14.000000Z"}, {"uuid": "4eb64d6f-6e1e-44b0-b607-249c798d967e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21239", "type": "seen", "source": "https://t.me/cibsecurity/22496", "content": "\u203c CVE-2021-21239 \u203c\n\nPySAML2 is a pure python implementation of SAML Version 2 Standard. PySAML2 before 6.5.0 has an improper verification of cryptographic signature vulnerability. Users of pysaml2 that use the default CryptoBackendXmlSec1 backend and need to verify signed SAML documents are impacted. PySAML2 does not ensure that a signed SAML document is correctly signed. The default CryptoBackendXmlSec1 backend is using the xmlsec1 binary to verify the signature of signed SAML documents, but by default xmlsec1 accepts any type of key found within the given document. xmlsec1 needs to be configured explicitly to only use only _x509 certificates_ for the verification process of the SAML document signature. This is fixed in PySAML2 6.5.0.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-01-21T18:28:15.000000Z"}, {"uuid": "f10e78b1-ed46-42c7-8035-660670ebb7df", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21236", "type": "seen", "source": "https://t.me/cibsecurity/21687", "content": "\u203c CVE-2021-21236 \u203c\n\nCairoSVG is a Python (pypi) package. CairoSVG is an SVG converter based on Cairo. In CairoSVG before version 2.5.1, there is a regular expression denial of service (REDoS) vulnerability. When processing SVG files, the python package CairoSVG uses two regular expressions which are vulnerable to Regular Expression Denial of Service (REDoS). If an attacker provides a malicious SVG, it can make cairosvg get stuck processing the file for a very long time. This is fixed in version 2.5.1. See Referenced GitHub advisory for more information.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-01-06T20:41:22.000000Z"}, {"uuid": "a540c078-f885-4177-b942-9be6ff3fa214", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "seen", "source": "https://t.me/cibsecurity/21594", "content": "\u203c CVE-2021-21234 \u203c\n\nspring-boot-actuator-logview in a library that adds a simple logfile viewer as spring boot actuator endpoint. It is maven package \"eu.hinsch:spring-boot-actuator-logview\". In spring-boot-actuator-logview before version 0.2.13 there is a directory traversal vulnerability. The nature of this library is to expose a log file directory via admin (spring boot actuator) HTTP endpoints. Both the filename to view and a base folder (relative to the logging folder root) can be specified via request parameters. While the filename parameter was checked to prevent directory traversal exploits (so that `filename=../somefile` would not work), the base folder parameter was not sufficiently checked, so that `filename=somefile&base=../` could access a file outside the logging base directory). The vulnerability has been patched in release 0.2.13. Any users of 0.2.12 should be able to update without any issues as there are no other changes in that release. There is no workaround to fix the vulnerability other than updating or removing the dependency. However, removing read access of the user the application is run with to any directory not required for running the application can limit the impact. Additionally, access to the logview endpoint can be limited by deploying the application behind a reverse proxy.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-01-05T20:52:47.000000Z"}, {"uuid": "7fd209ea-795f-4000-baf1-74031421d356", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "exploited", "source": "The Shadowserver (honeypot/exploited-vulnerabilities) - (2026-05-03)", "content": "", "creation_timestamp": "2026-05-03T00:00:00.000000Z"}, {"uuid": "4ae5d813-3f12-4b51-a6d2-353ed7167ce7", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "seen", "source": "The Shadowserver (honeypot/common-vulnerabilities) - (2026-05-03)", "content": "", "creation_timestamp": "2026-05-03T00:00:00.000000Z"}, {"uuid": "9bc2aa2e-e1dd-42ed-8e48-3f39bdefcd0f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "published-proof-of-concept", "source": "https://t.me/BlueRedTeam/1252", "content": "#exploit\nCVE-2021-21234:\nSpring Boot Actuator Logview Directory Traversal\nhttps://pyn3rd.github.io/2021/10/25/CVE-2021-21234-Spring-Boot-Actuator-Logview-Directory-Traversal\n\n@BlueRedTeam", "creation_timestamp": "2021-12-01T09:38:28.000000Z"}, {"uuid": "e3725d1e-ff60-4709-966a-63d4c7aa98ac", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-21234", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/4876", "content": "#exploit\n1. CVE-2021-21234:\nSpring Boot Actuator Logview Directory Traversal\nhttps://pyn3rd.github.io/2021/10/25/CVE-2021-21234-Spring-Boot-Actuator-Logview-Directory-Traversal\n2. Micropatching Unpatched LPE in Mobile Device Management Service (CVE-2021-24084/0day)\nhttps://blog.0patch.com/2021/11/micropatching-unpatched-local-privilege.html", "creation_timestamp": "2021-12-01T12:29:13.000000Z"}]}