#dos

There exists a buffer overflow vulnerability in the TP-Link TL-WR740 router that can allow an attacker to crash the web server running on the router by sending a crafted request.

Debian Linux Security Advisory 5637-1 - Several security vulnerabilities have been discovered in Squid, a full featured web proxy cache. Due to programming errors in Squid's HTTP request parsing, remote attackers may be able to execute a denial of service attack by sending large X-Forwarded-For header or trigger a stack buffer overflow while performing HTTP Digest authentication. Other issues facilitate request smuggling past a firewall or a denial of service against Squid's Helper process management.

Ubuntu Security Notice 6680-2 - 黄思聪 discovered that the NFC Controller Interface implementation in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service. It was discovered that a race condition existed in the Bluetooth subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice 6686-1 - It was discovered that the DesignWare USB3 for Qualcomm SoCs driver in the Linux kernel did not properly handle certain error conditions during device registration. A local attacker could possibly use this to cause a denial of service. It was discovered that a race condition existed in the Cypress touchscreen driver in the Linux kernel during device removal, leading to a use-after- free vulnerability. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice 6685-1 - It was discovered that mqtt-client incorrectly handled memory while parsing malformed MQTT frames. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code.

Ubuntu Security Notice 6684-1 - It was discovered that ncurses incorrectly handled certain function return values, possibly leading to segmentation fault. A local attacker could possibly use this to cause a denial of service.

Ubuntu Security Notice 6682-1 - ZeddYu Lu discovered that Puma incorrectly handled parsing certain headers. A remote attacker could possibly use this issue to perform an HTTP Request Smuggling attack. This issue only affected Ubuntu 20.04 LTS. It was discovered that Puma incorrectly handled parsing certain headers. A remote attacker could possibly use this issue to perform an HTTP Request Smuggling attack. This issue only affected Ubuntu 20.04 LTS.

Ubuntu Security Notice 6683-1 - It was discovered that HtmlCleaner incorrectly handled certain html documents. An attacker could possibly use this issue to cause a denial of service via application crash.

### Issue: At ospd_common.c, on the osdp_reply_name function, any reply id between REPLY_ACK and REPLY_XRD is valid, but names array do not declare all of the range. On a case of an undefined reply id within the range, name will be null (`name = names[reply_id - REPLY_ACK];`). Null name will casue a crash on next line: `if (name[0] == '\0')` as null[0] is invalid. ### Attack: As this logic is not limited to a secure connection, attacker may trigger this vulnerability without any prior knowledge. ### Impact Denial of Service ### Patch The issue has been patched in 24409e98a260176765956ec766a04cb35984fab1

### Summary This vulnerability allows an attacker with a trusted public key to cause a Denial-of-Service (DoS) condition by crafting a malicious JSON Web Encryption (JWE) token with an exceptionally high compression ratio. When this token is processed by the recipient, it results in significant memory allocation and processing time during decompression. ### Details **The attacker needs to obtain a valid public key to compress the payload**. It needs to be valid so that the recipient can use to successfully decompress the payload. Furthermore in context JWT processing in the v2 versions, the recipient must explicitly allow JWE handling . The attacker then crafts a message with high compression ratio, e.g. a payload with very high frequency of repeating patterns that can decompress to a much larger size. If the payload is large enough, recipient who is decompressing the data will have to allocate a large amount of memory, which then can lead to a denial of service. The original repo...