#dos

Ubuntu Security Notice 6512-1 - It was discovered that LibTIFF could be made to run into an infinite loop. If a user or an automated system were tricked into opening a specially crafted image file, an attacker could possibly use this issue to cause a denial of service. It was discovered that LibTIFF could be made leak memory. If a user or an automated system were tricked into opening a specially crafted image file, an attacker could possibly use this issue to cause a denial of service.

Ubuntu Security Notice 6513-1 - It was discovered that Python incorrectly handled certain plist files. If a user or an automated system were tricked into processing a specially crafted plist file, an attacker could possibly use this issue to consume resources, resulting in a denial of service. It was discovered that Python instances of ssl.SSLSocket were vulnerable to a bypass of the TLS handshake. An attacker could possibly use this issue to cause applications to treat unauthenticated received data before TLS handshake as authenticated data after TLS handshake.

Ubuntu Security Notice 6510-1 - David Shoon discovered that the Apache HTTP Server mod_macro module incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service.

Debian Linux Security Advisory 5563-1 - Benoit Morgan, Paul Grosen, Thais Moreira Hamasaki, Ke Sun, Alyssa Milburn, Hisham Shafi, Nir Shlomovich, avis Ormandy, Daniel Moghimi, Josh Eads, Salman Qazi, Alexandra Sandulescu, Andy Nguyen, Eduardo Vela, Doug Kwan, and Kostik Shtoyk discovered that some Intel processors mishandle repeated sequences of instructions leading to unexpected behavior, which may result in privilege escalation, information disclosure or denial of service.

Debian Linux Security Advisory 5562-1 - It was discovered that Tor was susceptible to a crash during handshake with a remote relay, resulting in denial of service.

Ubuntu Security Notice 6508-1 - It was discovered that poppler incorrectly handled certain malformed PDF files. If a user or an automated system were tricked into opening a specially crafted PDF file, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. It was discovered that poppler incorrectly handled certain malformed PDF files. If a user or an automated system were tricked into opening a specially crafted PDF file, a remote attacker could possibly use this issue to cause a denial of service.

Ubuntu Security Notice 6509-1 - Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across domains, or execute arbitrary code. It was discovered that Firefox did not properly manage memory when images were created on the canvas element. An attacker could potentially exploit this issue to obtain sensitive information.

An out-of-memory flaw was found in libtiff. Passing a crafted tiff file to TIFFOpen() API may allow a remote attacker to cause a denial of service via a craft input with size smaller than 379 KB.

With this notification I would like to inform about a DoS vector in the Ethereum ABI decoder. We have not yet found a way to exploit this with high impact, still the bug could potentially lead to a DoS in server systems. Feel free to ask about an extension of the embargo period. Trail of Bits is informing you and other vendors as a community service, and so we do not seek a bug bounty on these issues. ## BUG DESCRIPTION Parsers must be written in a robust way, which avoids for example unrecoverable crashes, misinterpretation, hangs, or excessive resource consumption. The recent news about the aCropalypse bug also highlights that more subtle bugs like blind spots in file formats can lead to serious implications. Sometimes the specifications are at fault and sometimes the implementations. In the case of the Ethereum ABI, I have to blame the specification more than the vulnerable implementations. The specification allows zero-sized-types (ZST), which can cause denial-of-service upon...

IBM QRadar WinCollect Agent 10.0 through 10.1.7 could allow a privileged user to obtain sensitive information due to missing best practices. IBM X-Force ID: 213551.