#dos

Red Hat Security Advisory 2023-4003-01 - As a Kubernetes user, I cannot connect easily connect services from one cluster with services on another cluster. Red Hat Application Interconnect enables me to create a service network and it allows geographically distributed services to connect as if they were all running in the same site. Issues addressed include a denial of service vulnerability.

Ubuntu Security Notice 6212-1 - Hangyu Hua discovered that the Flower classifier implementation in the Linux kernel contained an out-of-bounds write vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that for some Intel processors the INVLPG instruction implementation did not properly flush global TLB entries when PCIDs are enabled. An attacker could use this to expose sensitive information or possibly cause undesired behaviors.

Buffer Overflow vulnerability in Avast AntiVirus before v.19.7 allows a local attacker to cause a denial of service via a crafted request to the aswSnx.sys driver.

A vulnerability has been identified in SiPass integrated (All versions < V2.90.3.8). Affected server applications improperly check the size of data packets received for the configuration client login, causing a stack-based buffer overflow. This could allow an unauthenticated remote attacker to crash the server application, creating a denial of service condition.

A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3.4), SIMATIC MV540 S (All versions < V3.3.4), SIMATIC MV550 H (All versions < V3.3.4), SIMATIC MV550 S (All versions < V3.3.4), SIMATIC MV560 U (All versions < V3.3.4), SIMATIC MV560 X (All versions < V3.3.4). The result synchronization server of the affected products contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation of all socket-based communication of the affected products if the result server is enabled.

**How could an attacker exploit this vulnerability?** In most situations, an unauthenticated attacker could send a specially crafted packet to a targeted server utilizing the Server Name Indication (SNI) over HTTP Protocol Stack (http.sys) to process packets, causing a denial of service (DOS).

**According to the CVSS metric, the attack vector is adjacent (AV:A). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires that an attacker will need to first gain access to the restricted network before running an attack.

**How could an attacker exploit this vulnerability?** In most situations, an unauthenticated attacker could send a specially crafted packet to a targeted server utilizing the Server Name Indication (SNI) over HTTP Protocol Stack (http.sys) to process packets, causing a denial of service (DOS).

**According to the CVSS metric, the attack vector is adjacent (AV:A). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires that an attacker will need to first gain access to the restricted network before running an attack.

Categories: Personal Tags: tootroot Tags: mastodon Tags: server Tags: patch Tags: update Tags: CVE Tags: flaw Tags: vulnerability Tags: social media Tags: network Tags: networking We take a look at a collection of issues (now patched) which were affecting Mastodon servers. It's time to apply the fix for TootRoot. (Read more...) The post "TootRoot" Mastodon vulnerabilities fixed: Admins, patch now! appeared first on Malwarebytes Labs.