Tanzania Computer Emergency Response Team
Advisory No: TZCERT/SA/2021/12/14 Date of First Release: 14th December 2021 Source: Apache Software Affected: All versions of Log4j from 2.0-beta9 to 2.14.1 Overview Apache Log4j between versions log4j 2.0 to 2.14.1 are vulnerable to unauthenticated arbitrary code execution. A remote attacker can exploit the vulnerability to run malicious code on the affected machine. Description Log4j …
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Printing Shells: Remote Code Execution vulnerability in HP multi-function printers (MFPs)
Advisory No: TZCERT/SA/2021/12/01 Date of First Release: 01st December 2021 Source: HP Software Affected: HP Color LaseJet Enterprise, HP OfficeJet Enterprise and HP ScanJet Enterprise 8500 FN1 firmware. Overview Two vulnerabilities, namely CVE-2021-39238 and CVE-2021-39237, exists in HP multi-function printers (MFPs) products. The exploitation of these vulnerabilities could allow an attacker to take control of …
Read More »Apache HTTP Server Path Traversal Zero-Day Vulnerability CVE-2021-41773
Advisory No: TZCERT/SA/2021/10/06 Date of First Release: 06th October 2021 Source: Apache Software Affected: Apache HTTP Server 2.4.49 Overview The vulnerability exists in the Apache web servers running version 2.4.49. The exploitation of this vulnerability could allow an attacker to use a path traversal attack to map URLs to files outside the expected document root. …
Read More »Azure Cosmos DB Jupyter Notebook Feature vulnerability
Advisory No: TZCERT/SA/2021/08/31 Date of First Release: 31st August 2021 Source: Microsoft Software Affected: Azure Cosmos DB Overview: The vulnerability exists in the Azure Cosmos DB Jupyter Notebook feature. The exploitation of this vulnerability could allow a user to gain access to another customer’s resources by using the account’s primary read-write key. Description: The vulnerability …
Read More »ProxyShell Attacks targeting Microsoft Exchange Servers – CVE-2021-31207, CVE-2021-34473, CVE-2021-34523
Advisory No: TZCERT/SA/2021/08/24 Date of First Release: 24th August 2021 Source: Microsoft Software Affected: Microsoft Exchange Server 2019Microsoft Exchange Server 2016Microsoft Exchange Server 2013 Overview: Microsoft Exchange Server contains remote code execution vulnerabilities as a result of improper input validation. Exploitation attempts leverage the latest line of “ProxyShell” Microsoft Exchange vulnerabilities. Description: Vulnerabilities exist in a way Microsoft Exchange Servers …
Read More »Microsoft Windows Print Spooler RCE vulnerability
Advisory No: TZCERT/SA/2021/07/01 Date of First Release: 01st July 2021 Source: Microsoft Software Affected: Microsoft Windows Print Spooler Service Overview: Vulnerability exists in Microsoft Windows Print Spooler service due to failure in restricting access to the RpcAddPrinterDriverEx() function, which could allow a remote attacker to execute arbitrary code with SYSTEM privileges on a …
Read More »CYBER ATTACKS ON CRITICAL INFORMATION INFRASTRUCURE (CII)
Tanzania Computer Emergency Response Team (TZ-CERT), established under Tanzania Communications Regulatory Authority (TCRA), is aware of a cyber-attack targeting organizations with Critical Information Infrastructure (CII). The threat actors are reported to use a new variant of ransomware referred to as “DarkSide” to lock down computer systems and ask the victims …
Read More »VULNERABILITIES IN MICROSOFT EXCHANGE SERVER
Tanzania Computer Emergency Response Team (TZ-CERT), established under Tanzania Communications Regulatory Authority (TCRA), is aware of the multiple vulnerabilities being capitalized by threat actors to attack Microsoft Exchange Servers. A successful exploitation of the vulnerabilities may allow an unauthenticated attacker to execute arbitrary code on vulnerable Exchange Servers, thereby gaining …
Read More »VMware Remote Code Execution and Authentication Vulnerability (CVE-2021-21985, CVE-2021-21986)
Advisory No: TZCERT/SA/2021/05/27 Date of First Release: 27th May 2021 Source: VMware Software Affected: VMware vCenter Server (vCenter Server)VMware Cloud Foundation (Cloud Foundation) Overview: Multiple vulnerabilities exist in vSphere Client (HTML5) that could cause remote code execution (CVE-2021-21985) and perform actions allowed by Virtual SAN Health Check plug-in without authentication (CVE-2021-21986). Description: The vSphere Client …
Read More »Google Chrome Zero-Day remote code execution vulnerability (CVE-2021-21220)
Advisory No: TZCERT/SA/2021/04/15 Date of First Release: 15th April 2021 Source: Google Software Affected: Google Chrome (Desktop version) prior to 89.0.4389.128 Overview: The vulnerability is caused by insufficient validation of untrusted input in google chrome’s V8 javascript rendering engine. Description: A remote attacker could entice a user to open a web page with specially crafted …
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