A presentation at the ZeroNights 2018 conference describes multiple security issues with Marvell Avastar SoCs(models 88W8787,88W8797,88W8801,88W8897,and 88W8997). The presentation provides some detail about a block pool memory overflow. During Wi-Fi network scans,an overflow condition can be triggered,overwriting certain block pool data structures. Because many devices conduct automatic background network scans,this vulnerability could be exploited regardless of whether the target is connected to a Wi-Fi network and without user interaction.
Microsoft Exchange supports a API called Exchange Web Services(EWS). One of the EWS API functions is called PushSubscriptionRequest,which can be used to cause the Exchange server to connect to an arbitrary website. Connections made using the PushSubscriptionRequest function will attempt to negotiate with the arbitrary web server using NTLM authentication. Starting with Microsoft Exchange 2013,the NTLM authentication over HTTP fails to set the NTLM Sign and Seal flags. The lack of signing makes this authentication attempt vulnerable to NTLM relay attacks. Microsoft Exchange is by default configured with extensive privileges with respect to the Domain object in Active Directory. Because the Exchange Windows Permissions group has WriteDacl access to the Domain object,this means that the Exchange server privileges obtained using this vulnerability can be used to gain Domain Admin privileges for the domain that contains the vulnerable Exchange server.
CWE-122:Heap-based Buffer Overflow - CVE-2018-8626 Microsoft Windows Domain Name System(DNS)servers are vulnerable to heap overflow attacks. Microsoft acknowledges that"an attacker who successfully exploited the vulnerability could run arbitrary code in the context of the Local System Account."This remote code execution vulnerability exists in Windows DNS servers when they fail to properly handle requests.
CWE-362:Concurrent Execution using Shared Resource with Improper Synchronization('Race Condition')- CVE-2018-8611 According to Microsoft,the Windows kernel fails"to properly handle objects in memory". A successful attacker could run arbitrary code in kernel mode,and then"install programs; view,change,or delete data; or create new accounts with full user rights."
The Microsoft Windows MsiAdvertiseProduct function allows a Windows installer product to generate a script to advertise a product to Windows,which handles shortcut and registry information associated with an installed application. The MsiAdvertiseProduct contains a race condition while performing checks,which can allow an attacker to read an arbitrary file which would otherwise be protected with filesystem ACLs. Exploit code for this vulnerability is publicly available.
CWE-121:Stack-based Buffer Overflow - CVE-2018-5410 Dokan,versions between 220.127.116.1100 and 18.104.22.1680,are vulnerable to a stack-based buffer overflow in the dokan1.sys driver. An attacker can create a device handle to the system driver and send arbitrary input that will trigger the vulnerability. This vulnerability was introduced in the 22.214.171.12400 version update.
Microsoft Internet Explorer contains a scripting engine,which handles execution of scripting languages such as VBScript and JScript. The scripting engine JScript component contains an unspecified memory corruption vulnerability. Any application that supports embedding Internet Explorer or its scripting engine component may be used as an attack vector for this vulnerability. This vulnerability was detected in exploits in the wild.
CVE-2018-12037 There is no cryptographic relation between the password provided by the end user and the key used for the encryption of user data. This can allow an attacker to access the key without knowing the password provided by the end user,allowing the attacker to decrypt information encrypted with that key. According to National Cyber Security Centre - The Netherlands(NCSC-NL),the following products are affected by CVE-2018-12037: Crucial(Micron)MX100,MX200 and MX300 drives Samsung T3 and T5 portable drives Samsung 840 EVO and 850 EVO drives(In"ATA high" mode these devices are vulnerable,In"TCG"or"ATA max"mode these devices are NOT vulnerable.) CVE-2018-12038 Key information is stored within a wear-leveled storage chip. Wear-leveling does not guarantee that an old copy of updated data is fully removed. If the updated data is written to a new segment,old versions of data may exist in the previous segment for some time after it has been updated(until that previous segment is overwritten). This means that if a key is updated with a new password,the previous version of the key(either unprotected,or with an old password)could be accessible,negating the need to know the updated password. According to NCSC-NL,the following products are affected by CVE-2018-12038: Samsung 840 EVO drives Other products were not reported to have been tested,and similar vulnerabilities may be found in those products.
CWE-119:Improper Restriction of Operations within the Bounds of a Memory Buffer CVE-2018-16986 - also known as BLEEDINGBIT The following Texas Instrument chips are affected: CC2640(non-R2)with BLE-STACK version 2.2.1 or an earlier version CC2650 with BLE-STACK version 2.2.1 or an earlier version CC2640R2F with SimpleLink CC2640R2 SDK version 1.00.00.22(BLE-STACK 3.0.0)CC1350 with SimpleLink CC13x0 SDK version 2.20.00.38(BLE-STACK 2.3.3)or an earlier version The above Texas Instruments controllers contain BLE-Stacks with a memory corruption vulnerability resulting from the mishandling of BLE advertising packets. The function llGetAdvChanPDU that is part of the embedded ROM image in both chips handles the incoming advertising packets and parses their headers. It copies the contents to a separate buffer provided by the calling function. The incorrect length of the packet is taken and ends up being parsed as larger packets than originally intended. If the incoming data is over a certain length,the function will call the halAssertHandler function,as defined by the application running on top of the stack,and not stop execution. Since the flow of execution does not stop,it will copy the overly large packet to the buffer and cause a heap overflow. CVE-2018-7080 - also known as BLEEDINGBIT The following Texas Instruments devices are affected if the Over the Air firmware Download(OAD)feature is enabled and not sufficiently secured: CC2642R CC2640R2 CC2640 CC2650 CC2540 CC2541 Certain Aruba access points are affected. The OAD feature allows for remote firmware updates of some BLE chips. An attacker could connect to a BLE chip on a vulnerable access point(either without authentication or by obtaining the password through other means depending on the implementation)and upload their own malicious firmware,which could give them complete control over the access point.
Cisco Adaptive Security Appliance(ASA)software and Cisco Firepower Threat Defense(FTD)software fails to properly parse SIP traffic,which can allow an attacker to trigger high CPU usage,resulting in a denial-of-service condition on affected devices. This vulnerability is exposed if SIP Inspection is enabled on affected devices,which is the default configuration on ASA devices. The Cisco SIP Inspection feature is advertised to"... enforce the sanity of the SIP messages,as well as detect SIP-based attacks."
CWE 798:୕se of Hard-Coded Credentials - CVE–2018-5399 The DCU 210E firmware contains an undocumented Dropbear SSH server with a hardcoded username and password. The password is easily susceptible to cracking. CWE-346:rigin Validation Error - CVE–2018-5400 The Auto-Maskin products utilize an undocumented custom protocol to set up Modbus communications with other devices without validating those devices. CWE-319:ୃleartext Transmission of Sensitive Information - CVE–2018-5401 The devices transmit process control information via unencrypted Modbus communications. CWE-319:ୃleartext Transmission of Sensitive Information - CVE–2018-5402 The embedded webserver uses unencrypted plaintext for the transmission of the administrator PIN.
CWE-306:Missing Authentication for Critical Function - CVE-2018-5393 EAP Controller for Linux utilizes a Java remote method invocation(RMI)service for remote control. The RMI interface does not require any authentication before use. Remote attackers can implement deserialization attacks through the RMI protocol. Successful attacks may allow a remote attacker to remotely control the target server and execute Java functions or bytecode. CWE-502:Deserialization of Untrusted Data - CVE-2015-6420 EAP Controller for Linux bundles a vulnerable version of Apache commons-collections v3.2.1 with the software,which appears to be the root cause of the vulnerability. Therefore,EAP Controller v2.5.3 and earlier are vulnerable to CVE-2015-6420 as documented in VU#576313. EAP Controller v2.5.3 and earlier for Linux are affected by both vulnerabilities.
The Web Proxy Automatic Discovery(WPAD)protocol is used to automatically provide proxy configuration information to devices on a network. Clients issue a special DHCP request to obtain the information for the proxy configuration,but will fall back on a DNS request to one of several standardized URLs making use of the subdomain name of“wpad” if a DHCP response is unavailable. An attacker with local area network(LAN)access may be able to add a device with the name“wpad” to the network,which may produce a collision with a standardized WPAD DNS name. Many customer premise home/office routers(including,but not limited to,Google Wifi and Ubiquiti UniFi)automatically register device names as DNS A records on the LAN,which may allow an attacker to utilize a specially named and configured device to act as a WPAD proxy configuration server. The attacker-served proxy configuration can result in the loss of confidentiality and integrity of any network activity by any device that utilizes WPAD. Other autodiscovery names such as ISATAP may also be exploitable.
The Microsoft Windows task scheduler SchRpcSetSecurity API contains a vulnerability in the handling of ALPC,which can allow an authenticated user to overwrite the contents of a file that should be protected by filesystem ACLs. This can be leveraged to gain SYSTEM privileges. We have confirmed that the public exploit code works on 64-bit Windows 10 and Windows Server 2016 systems. We have also confirmed compatibility with 32-bit Windows 10 with minor modifications to the public exploit code. Compatibility with other Windows versions is possible with further modifications. This vulnerability is being exploited in the wild.
The UK Police Federation of England & Wales (PFEW) website was subject to a malware attack that it discovered on March 9, 2019. It appears that this was a ransomware attack; but the strain has not been announced.
Norwegian aluminum giant Norsk Hydro has been hit by a serious ransomware attack that caused disruptions at some of its plants and forced the company to turn to manual processes to fulfill customer orders.
Karl A. Racine, the attorney general for the District of Columbia, on Thursday announced the introduction of a new bill that aims to expand data breach notification requirements and improve the way personal information is protected by organizations.
The RSA Conference is one of the premier events in the cybersecurity world. At times, it can be an overwhelming experience for vendors and attendees alike because of its massive scale and fast pace; however, it’s also a great opportunity for people like me to get insight into trends in the industry.
From Ferdinand Magellan to Lewis and Clark to Neil Armstrong – humans have an innate desire to understand the unknown. In security operations, we see this phenomenon every day in several forms, one of which is threat hunting. Threat hunting is not triggered by an event, but by the unknown. It is the practice of proactively and iteratively searching for abnormal indications within networks and systems.
Global spending on security-related hardware software and services will grow at a compound annual growth rate (CAGR) of 9.2% between 2018 and 2022, to a total of $133.8 billion in 2022. The figures come from the latest Worldwide Semiannual Security Spending Guide compiled by IDC.
PuTTY, an SSH and Telnet client program, and LibSSH2, a client-side C library for the SSH2 protocol, have both received updates fixing multiple vulnerabilities. Eight vulnerabilities have been fixed in version 0.71 of PuTTY, and nine vulnerabilities fixed in version 1.8.1 of LibSSH2.
While Facebook’s bug bounty program does not typically cover denial-of-service (DoS) vulnerabilities, the social media giant has decided to award a significant bounty for a serious flaw affecting Fizz, its open source TLS library.