#dos

Debian Linux Security Advisory 5656-1 - Security issues were discovered in Chromium, which could result in the execution of arbitrary code, denial of service or information disclosure.

Ubuntu Security Notice 6729-1 - Orange Tsai discovered that the Apache HTTP Server incorrectly handled validating certain input. A remote attacker could possibly use this issue to perform HTTP request splitting attacks. Keran Mu and Jianjun Chen discovered that the Apache HTTP Server incorrectly handled validating certain input. A remote attacker could possibly use this issue to perform HTTP request splitting attacks.

Red Hat Security Advisory 2024-1787-03 - An update for squid is now available for Red Hat Enterprise Linux 7. Issues addressed include buffer over-read, denial of service, and null pointer vulnerabilities.

Red Hat Security Advisory 2024-1786-03 - An update for the httpd:2.4 module is now available for Red Hat Enterprise Linux 8. Issues addressed include a denial of service vulnerability.

### Impact A specially crafted argument to the `idna.encode()` function could consume significant resources. This may lead to a denial-of-service. ### Patches The function has been refined to reject such strings without the associated resource consumption in version 3.7. ### Workarounds Domain names cannot exceed 253 characters in length, if this length limit is enforced prior to passing the domain to the `idna.encode()` function it should no longer consume significant resources. This is triggered by arbitrarily large inputs that would not occur in normal usage, but may be passed to the library assuming there is no preliminary input validation by the higher-level application. ### References * https://huntr.com/bounties/93d78d07-d791-4b39-a845-cbfabc44aadb

Maliciously-crafted software artifacts can cause denial of service of the machine running Cosign, thereby impacting all services on the machine. The root cause is that Cosign creates slices based on the number of signatures, manifests or attestations in untrusted artifacts. As such, the untrusted artifact can control the amount of memory that Cosign allocates. As an example, these lines demonstrate the problem: https://github.com/sigstore/cosign/blob/286a98a4a99c1b2f32f84b0d560e324100312280/pkg/oci/remote/signatures.go#L56-L70 This `Get()` method gets the manifest of the image, allocates a slice equal to the length of the layers in the manifest, loops through the layers and adds a new signature to the slice. The exact issue is Cosign allocates excessive memory on the lines that creates a slice of the same length as the manifests. ## Remediation Update to the latest version of Cosign, where the number of attestations, signatures and manifests has been limited to a reasonable v...

### Summary A remote image with a malicious attachment can cause denial of service of the host machine running Cosign. This can impact other services on the machine that rely on having memory available such as a Redis database which can result in data loss. It can also impact the availability of other services on the machine that will not be available for the duration of the machine denial. ### Details The root cause of this issue is that Cosign reads the attachment from a remote image entirely into memory without checking the size of the attachment first. As such, a large attachment can make Cosign read a large attachment into memory; If the attachments size is larger than the machine has memory available, the machine will be denied of service. The Go runtime will make a `SIGKILL` after a few seconds of system-wide denial. The root cause is that Cosign reads the contents of the attachments entirely into memory on line 238 below: https://github.com/sigstore/cosign/blob/9bc3ee309bf35...

Ubuntu Security Notice 6728-2 - USN-6728-1 fixed vulnerabilities in Squid. The fix for CVE-2023-5824 caused Squid to crash in certain environments on Ubuntu 20.04 LTS. The problematic fix has been reverted pending further investigation. Joshua Rogers discovered that Squid incorrectly handled collapsed forwarding. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. Joshua Rogers discovered that Squid incorrectly handled certain structural elements. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. Joshua Rogers discovered that Squid incorrectly handled Cache Manager error responses. A remote trusted client can possibly use this issue to cause Squid to crash, resulting in a denial of service. Joshua Rogers discovered that Squid incorrectly handled the HTTP Chunked decoder. A remote attacker could possibly use this ...

Ubuntu Security Notice 6728-1 - Joshua Rogers discovered that Squid incorrectly handled collapsed forwarding. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. Joshua Rogers discovered that Squid incorrectly handled certain structural elements. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service.

Red Hat Security Advisory 2024-1752-03 - An update is now available for Red Hat OpenShift GitOps v1.12.1 for Argo CD CLI and MicroShift GitOps. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link in the References section. Issues addressed include bypass and denial of service vulnerabilities.