Vulnerability Archives | JUMPSEC LABS

Advisory: IDOR in Microsoft Teams Allows for External Tenants to Introduce Malware

by maxcorbridge | Jun 21, 2023 | Exploitation, Research, Security Bug, Vulnerability, Windows

TL;DR Max Corbridge (@CorbridgeMax) and Tom Ellson (@tde_sec) of JUMPSEC’s Red Team recently discovered a vulnerability in the latest version of Microsoft Teams which allows for the possible introduction of malware into any organisations using Microsoft Teams in its default configuration. This is done by bypassing client-side security controls which prevent external tenants from sending files (malware in this case) to staff in your organisation. JUMPSEC has detailed remediation options, as...

Advisory CVE-2023-30382 – Half-Life Local Privilege Escalation

by Ryan Saridar | May 23, 2023 | Jumpsec, Vulnerability

Software: Half-Life Affected versions: Latest (<= build 5433873), at the time of writing Vendor page: www.valvesoftware.com CVE Reference: CVE-2023-30382 Published: 23/05/2023 CVSS 3.1 Score: 8.2 AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H Attack Vector: Local Credit: Ryan Saridar Summary An attacker can leverage a stack-based buffer overflow via Half-Life’s command line arguments to compromise the account of any local user who launches the game. Technical details hl.exe does not adequately perform...

Butting Heads with a Threat Actor on an Engagement

by maxcorbridge | Apr 17, 2023 | Exploitation, Incident Response, Vulnerability, Windows

After compromising a sensitive external server JUMPSEC’s Red Team found that they were not the first ones there…

Advisory CVE-2022-37832 – Mutiny Network Monitoring Appliance hardcoded credentials

by Ryan Saridar | Dec 15, 2022 | Jumpsec, Vulnerability

Software: Mutiny Network Monitoring Appliance Affected versions: <= 7.2.0-10855 Vendor page: www.mutiny.com CVE Reference: CVE-2022-37832 Published: 16/12/2022 CVSS 3.1 Score: 10.0 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector: Network Credit: Ryan Saridar Summary An attacker can log in as root remotely to the appliance via SSH. Mitigation Upgrade to version 7.2.0-10855 onwards to remediate the problem. Technical details Before version 7.2.0-10855, the SSH service allows password login...

Advisory CVE-2021-41551 Leostream Connection Broker – Authenticated Zip Slip

by lrckt | Jan 26, 2022 | Research, Security Bug, Vulnerability

Software: Leostream Connection BrokerAffected Versions: 9.0.40.17Vendor page: https://leostream.com/CVE Reference: CVE-2021-41551Published: 25/01/2022Attack Vector: path traversal, authenticatedCredits: Andrei Constantin Scutariu, Lenk Ratchakrit Seriamnuai, Andrea Malusardi Summary Leostream Connection Broker 9.0.40.17 allows administrators to conduct directory traversal attacks by uploading a ZIP file that contains a symbolic link. Mitigation The Leostream has released a patch for this...

Advisory CVE-2021-41550 Leostream Connection Broker – Authenticated Remote Code Execution

by lrckt | Jan 26, 2022 | Research, Security Bug, Vulnerability

Software: Leostream Connection BrokerAffected Versions: 9.0.40.17Vendor page: https://leostream.com/CVE Reference: CVE-2021-41550Published: 25/01/2022Attack Vector: Remote, authenticatedCredits: Andrei Constantin Scutariu, Lenk Ratchakrit Seriamnuai, Andrea Malusardi Summary As the Leostream Connection Broker version: 9.0.40.17 allowed an attacker to upload any content through Third Party Content functionality, it was found that the application allowed the listed filenames below the ability to...

Securing against new offensive techniques abusing active directory certificate service

by editor | Jul 6, 2021 | Detection, Vulnerability

SpecterOps recently released an offensive security research paper that details techniques enabling an adversary to abuse insecure functionality in Active Directory Certificate Service. SpecterOps reports that abusing the legitimate functionality of Active Directory Certificate Service will allow an adversary to forge the elements of a certificate to authenticate as any user or administrator in Active Directory. JUMPSEC has highlighted numerous changes that can be made to Active Directory...

JUMPSEC LABS

Advisory CVE-2023-30382 – Half-Life Local Privilege Escalation

Butting Heads with a Threat Actor on an Engagement

Advisory CVE-2022-37832 – Mutiny Network Monitoring Appliance hardcoded credentials

Advisory CVE-2021-41551 Leostream Connection Broker – Authenticated Zip Slip

Advisory CVE-2021-41550 Leostream Connection Broker – Authenticated Remote Code Execution

Securing against new offensive techniques abusing active directory certificate service

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