Use of Insufficiently Random Values

In random_get_bytes of random.c, there is a possible degradation of randomness due to an insecure default value. This could lead to local information disclosure via an insecure wireless connection with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9. Android ID: A-117508900.Show less

The seadroid (aka Seafile Android Client) application through 2.2.13 for Android always uses the same Initialization Vector (IV) with Cipher Block Chaining (CBC) Mode to encrypt private data, making it easier to conduct chosen-plaintext attacks or dictionary attacks.Show less

The vMX Series software uses a predictable IP ID Sequence Number. This leaves the system as well as clients connecting through the device susceptible to a family of attacks which rely on the use of predictable IP ID sequence numbers as their base method of attack. This issue was found during internal product security testing. Affected releases are Juniper Networks Junos OS: 15.1 versions prior to 15.1F5 on vMX Series.Show less

The determineWinner function of a smart contract implementation for HashHeroes Tiles, an Ethereum game, uses a certain blockhash value in an attempt to generate a random number for the case where NUM_TILES equals the number of people who purchased a tile, which allows an attacker to control the awarding of the prize by being the last person to purchase a tile.Show less

Pivotal RabbitMQ for PCF, all versions, uses a deterministically generated cookie that is shared between all machines when configured in a multi-tenant cluster. A remote attacker who can gain information about the network topology can guess this cookie and, if they have access to the right ports on any server in the MQ cluster can use this cookie to gain full control over the entire cluster.Show less

An issue was discovered on Sigma Design Z-Wave S0 through S2 devices. An attacker first prepares a Z-Wave frame-transmission program (e.g., Z-Wave PC Controller, OpenZWave, CC1110, etc.). Next, the attacker conducts a DoS attack against the Z-Wave S0 Security version product by continuously sending divided "Nonce Get (0x98 0x81)" frames. The reason for dividing the "Nonce Get" frame is that, in security version S0, when a node receives a "Nonce Get" frame, the node produces a random new nonce and sends it to the Src node of the received "Nonce Get" frame. After the nonce value is generated and transmitted, the node transitions to wait mode. At this time, when "Nonce Get" is received again, the node discards the previous nonce value and generates a random nonce again. Therefore, because the frame is encrypted with previous nonce value, the received normal frame cannot be decrypted.Show less

text/impl/DefaultTextCreator.java, text/impl/ChineseTextProducer.java, and text/impl/FiveLetterFirstNameTextCreator.java in kaptcha 2.3.2 use the Random (rather than SecureRandom) function for generating CAPTCHA values, which makes it easier for remote attackers to bypass intended access restrictions via a brute-force approach.Show less

POSIM EVO 15.13 for Windows includes an "Emergency Override" administrative account that may be accessed through POSIM's "override" feature. This Override prompt expects a code that is computed locally using a deterministic algorithm. This code may be generated by an attacker and used to bypass any POSIM EVO login prompt.Show less

Use of insufficiently random values vulnerability in SYNO.Encryption.GenRandomKey in Synology DiskStation Manager (DSM) before 6.2-23739 allows man-in-the-middle attackers to compromise non-HTTPS sessions via unspecified vectors.Show less

Pivotal Operations Manager, versions 2.1 prior to 2.1.6 and 2.0 prior to 2.0.15 and 1.12 prior to 1.12.22, contains a static Linux Random Number Generator (LRNG) seed file embedded in the appliance image. An attacker with knowledge of the exact version and IaaS of a running OpsManager could get the contents of the corresponding seed from the published image and therefore infer the initial state of the LRNG.Show less

Socket.io is a realtime application framework that provides communication via websockets. Because socket.io 0.9.6 and earlier depends on `Math.random()` to create socket IDs, the IDs are predictable. An attacker is able to guess the socket ID and gain access to socket.io servers, potentially obtaining sensitive information.Show less

kernel drivers before version 4.17-rc1 are vulnerable to a weakness in the Linux kernel's implementation of random seed data. Programs, early in the boot sequence, could use the data allocated for the seed before it was sufficiently generated.Show less

Cloud Foundry Cloud Controller, versions prior to 1.52.0, contains information disclosure and path traversal vulnerabilities. An authenticated malicious user can predict the location of application blobs and leverage path traversal to create a malicious application that has the ability to overwrite arbitrary files on the Cloud Controller instance.Show less

Remote Information Disclosure and Escalation of Privileges in ManageEngine Desktop Central MSP 10.0.137 allows attackers to download unencrypted XML files containing all data for configuration policies via a predictable /client-data/<client_id>/collections/##/usermgmt.xml URL, as demonstrated by passwords and Wi-Fi keys. This is fixed in build 100157.Show less