#dos

An update for grub2 is now available for Red Hat Enterprise Linux 9. 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-2022-2601: A flaw was found where a maliciously crafted pf2 font could lead to an out-of-bounds write in grub2. A successful attack can lead to memory corruption and secure boot circumvention. * CVE-2022-3775: A flaw was found in the grub2 font code. When rendering certain unicode sequences, it fails to properly validate the font width and height. These values...

**According to the CVSS metric, successful exploitation of this vulnerability could lead to total loss of availability (A:H)? What does that mean for this vulnerability?** An attacker could impact availability of the service resulting in "denial of service"\[DOS\].

**According to the CVSS metric, privileges required is low (PR:L). What does that mean for this vulnerability?** Any authenticated attacker could trigger this vulnerability. It does not require admin or other elevated privileges.

**According to the CVSS metric, privileges required is low (PR:L). What does that mean for this vulnerability?** Any authenticated attacker could trigger this vulnerability. It does not require admin or other elevated privileges.

Web infrastructure company Cloudflare on Monday disclosed that it thwarted a record-breaking distributed denial-of-service (DDoS) attack that peaked at over 71 million requests per second (RPS). "The majority of attacks peaked in the ballpark of 50-70 million requests per second (RPS) with the largest exceeding 71 million," the company said, calling it a "hyper-volumetric" DDoS attack. It's also

sgx-dcap-quote-verify-python includes a statically linked copy of OpenSSL. The version of OpenSSL included in sgx-dcap-quote-verify-python 0.0.1..0.0.2 is vulnerable to a security issue. More details about the OpenSSL vulnerabilities themselves can be found at https://www.openssl.org/news/secadv/20230207.txt. ## Analysis The binding includes OpenSSL version 1.1.1s which is vulnerable to the vulnerabilities disclosed in [OpenSSL Security Advisory from the 7th February 2023](https://www.openssl.org/news/secadv/20230207.txt). The binding does not directly use OpenSSL. The binding calls the SGX Quote Verification Library which uses OpenSSL. ## Explanation The SGX Quote Verification Library uses OpenSSL as a dependency to perform its cryptographic operations and certificate verification. The OpenSSL security advisory mentions multiple vulnerabilities but I believe the most concerning would be CVE-2023-0286 “X.400 address type confusion in X.509 GeneralName”. Its severity is rated high an...

LibTIFF 4.4.0 has an out-of-bounds read in tiffcrop in tools/tiffcrop.c:3400, allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources, the fix is available with commit afaabc3e.

LibTIFF 4.4.0 has an out-of-bounds read in tiffcrop in tools/tiffcrop.c:3701, allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources, the fix is available with commit afaabc3e.

LibTIFF 4.4.0 has an out-of-bounds read in tiffcrop in tools/tiffcrop.c:3592, allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources, the fix is available with commit afaabc3e.

LibTIFF 4.4.0 has an out-of-bounds read in tiffcrop in libtiff/tif_unix.c:368, invoked by tools/tiffcrop.c:2903 and tools/tiffcrop.c:6921, allowing attackers to cause a denial-of-service via a crafted tiff file. For users that compile libtiff from sources, the fix is available with commit afaabc3e.