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.
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-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.
VU#317277: Texas Instruments CC2640 and CC2650 microcontrollers vulnerable to heap overflow and insecure update
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.
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."
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.
VU#228297: Microsoft Windows MsiAdvertiseProduct function vulnerable to privilege escalation via race condition
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.
CERT publishes vulnerability advisories called "Vulnerability Notes." Vulnerability Notes include summaries, technical details, remediation information, and lists of affected vendors. Many vulnerability notes are the result of private coordination and disclosure efforts.Subscribe to Vulnerabilities feed