Common Security Misconfigurations and Their Consequences

Everyone makes mistakes. That one sentence was drummed into me in my very first job in tech, and it has held true since then. In the cybersecurity world, misconfigurations can create exploitable issues that can haunt us later - so let's look at a few common security misconfigurations. The first o...

The Edge of a Storm?

The SolarWinds element of this breach is likely just the tip of the iceberg as many more businesses leveraging their management tools are exposed to this compromise. Not necessarily from the nation state actor believed to have triggered it, but from the potential sell off of those points of acces...

CVE-2020-14254

TLS-RSA cipher suites are not disabled in HCL BigFix Inventory up to v10.0.2. If TLS 2.0 and secure ciphers are not enabled then an attacker can passively record traffic and later decrypt it...

NewStart CGSL CORE 5.04 / MAIN 5.04 : ntp Vulnerability (NS-SA-2020-0083)

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has ntp packages installed that are affected by a vulnerability: - ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofe...

Security Advisory 2020-12-09-1 - Linux kernel - ICMP rate limiting can be used to facilitate DNS poisoning attack (CVE-2020-25705)

DESCRIPTION A flaw has been found in the ICMP rate limiting algorithm of the Linux kernel. This flaw allows an off-path attacker to quickly determine open ephemeral ports that are used by applications making outbound connections. This can be exploited by an off-path attacker to more easily perfor...

CVE-2020-29040

An off-by-one flaw was found in one of the two patches for CVE-2020-27671 XSA-346. This flaw allows malicious x86 HVM and PVH guests to cause host data corruption and data leaks, resulting in a denial of service or potential privilege escalation. The highest threat from this vulnerability is to...

DEBIAN-CVE-2020-29040

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...

ALPINE-CVE-2020-29040

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...

CVE-2020-29040

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...

UBUNTU-CVE-2020-29040

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...

CVE-2020-29040

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...

Design/Logic Flaw

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...

CVE-2020-29040

Xen up to 4.14.x contains an off-by-one error introduced by an incorrect fix for CVE-2020-27671, allowing local x86 HVM guest OS users to cause denial of service (stack corruption), data leakage, or privilege escalation. Affected component: Xen hypervisor (x86 HVM path). Root cause: a diff-one/of...

CVE-2020-29040

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...

CVE-2020-29040

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...

PT-2020-17083

Name of the Vulnerable Software and Affected Versions Xen versions prior to 4.15 Description An issue in Xen allows x86 HVM guest OS users to cause a denial of service, a data leak, or possibly gain privileges due to an off-by-one error. This issue is caused by an incorrect fix for a previous...

CVE-2020-29040: Off-by-one Error

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service stack corruption, cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671...

Symantec Reports on Cicada APT Attacks against Japan

Symantec is reporting on an APT group linked to China, named Cicada. They have been attacking organizations in Japan and elsewhere. Cicada has historically been known to target Japan-linked organizations, and has also targeted MSPs in the past. The group is using living-off-the-land tools as well...

Amazon Linux 2 : httpd (ALAS-2020-1490)

The version of httpd installed on the remote host is prior to 2.4.46-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2020-1490 advisory. Apache HTTP server 2.4.32 to 2.4.44 modproxyuwsgi info disclosure and possible RCE A flaw was found in Apache httpd in...

CVE-2020-25705

A flaw in ICMP packets in the Linux kernel may allow an attacker to quickly scan open UDP ports. This flaw allows an off-path remote attacker to effectively bypass source port UDP randomization. Software that relies on UDP source port randomization are indirectly affected as well on the Linux Bas...