#dos

Ubuntu Security Notice 5402-2 - USN-5402-1 fixed several vulnerabilities in OpenSSL. This update provides the corresponding update for Ubuntu 16.04 ESM. Elison Niven discovered that OpenSSL incorrectly handled the c_rehash script. A local attacker could possibly use this issue to execute arbitrary commands when c_rehash is run. Aliaksei Levin discovered that OpenSSL incorrectly handled resources when decoding certificates and keys. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS.

Ubuntu Security Notice 5447-1 - It was discovered that logrotate incorrectly handled the state file. A local attacker could possibly use this issue to keep a lock on the state file and cause logrotate to stop working, leading to a denial of service.

Updated ovirt-engine packages that fix several bugs and add various enhancements are now available. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2021-3807: nodejs-ansi-regex: Regular expression denial of service (ReDoS) matching ANSI escape codes * CVE-2021-23425: nodejs-trim-off-newlines: ReDoS via string processing * CVE-2021-33502: normalize-url: ReDoS for data URLs * CVE-2021-41182: jquery-ui: XSS in the altField option of the datepicker widget * CVE-2021-41183: jquer...

Ubuntu Security Notice 5446-1 - Max Justicz discovered that dpkg incorrectly handled unpacking certain source packages. If a user or an automated system were tricked into unpacking a specially crafted source package, a remote attacker could modify files outside the target unpack directory, leading to a denial of service or potentially gaining access to the system.

Ubuntu Security Notice 5445-1 - Ace Olszowka discovered that Subversion incorrectly handled certain svnserve requests. A remote attacker could possibly use this issue to cause svnserver to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS. Tomas Bortoli discovered that Subversion incorrectly handled certain svnserve requests. A remote attacker could possibly use this issue to cause svnserver to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS.

Multiple vulnerabilities in the API and web-based management interfaces of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to write files or disclose sensitive information on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Actors claiming to be the defunct ransomware group are targeting one of Akami’s customers with a Layer 7 attack, demanding an extortion payment in Bitcoin.

### Impact PocketMine-MP caps maximum chat message length at 512 Unicode characters, or about 2048 bytes. No more than 2 chat messages may be sent per tick. However, due to legacy reasons, incoming chat message blobs are split by `\n`, and each part is treated as a separate message, the length of each part is individually checked. The length of the whole message is not checked. This leads to an exploitable performance issue, in which a malicious client may send a chat packet of several megabytes containing nothing but `\n` newline characters. The server will parse this into a very large array and spend a long time (several milliseconds) iterating over it for no reason. Furthermore, due to the lack of sufficient rate limit checks before parsing messages, malicious clients may bombard the server with many thousands of these malicious messages, causing lockups for a significant amount of time (seconds or minutes). ### Patches This bug was addressed in https://github.com/pmmp/PocketMine...

Supply chain and ransomware attacks increased dramatically in 2021, which explains why so many data breaches in Verizon's "2022 Data Breach Investigations Report" were grouped as system intrusion.

MariaDB Server before 10.7 is vulnerable to Denial of Service. In extra/mariabackup/ds_compress.cc, when an error occurs (i.e., going to the err label) while executing the method create_worker_threads, the held lock thd->ctrl_mutex is not released correctly, which allows local users to trigger a denial of service due to the deadlock.