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Vault and Vault Enterprise did not properly handle requests originating from unauthorized IP addresses when the TCP listener option, proxy_protocol_behavior, was set to deny_unauthorized. When receiving a request from a source IP address that was not listed in proxy_protocol_authorized_addrs, the Vault API server would shut down and no longer respond to any HTTP requests, potentially resulting in denial of service. While this bug also affected versions of Vault up to 1.17.1 and 1.16.5, a separate regression in those release series did not allow Vault operators to configure the deny_unauthorized option, thus not allowing the conditions for the denial of service to occur. Fixed in Vault and Vault Enterprise 1.17.2, 1.16.6, and 1.15.12.

### Impact The Auth0 WordPress plugin allows site administrators to opt-in to allowing the use of a `wle` parameter, which can be passed to the WordPress login page by end users. When this parameter is supplied using an expected value (which is randomly generated by the plugin, by default), the end user can fallback to using WordPress' native authentication behavior. (This is generally intended as an emergency fallback for administrators to still be able to access their dashboard in the event something goes wrong.) In previous versions of the plugin, under specific conditions, this parameter could potentially accept an arbitrary string that would be improperly rendered, potentially allowing for a cross-site scripting (XSS) attack on the login page. ### Patches Please upgrade to v4.6.1 of the plugin to resolve the issue.

Debian Linux Security Advisory 5728-1 - Phillip Szelat discovered that Exim, a mail transport agent, does not properly parse a multiline RFC 2231 header filename, allowing a remote attacker to bypass a $mime_filename based extension-blocking protection mechanism.

Ubuntu Security Notice 6891-1 - It was discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS and Ubuntu 18.04 LTS. It was discovered that Python incorrectly used regular expressions vulnerable to catastrophic backtracking. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS.

Ubuntu Security Notice 6892-1 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Atheros 802.11ac wireless driver did not properly validate certain data structures, leading to a NULL pointer dereference. An attacker could possibly use this to cause a denial of service.

Ubuntu Security Notice 6866-3 - It was discovered that the ext4 file system implementation in the Linux kernel did not properly validate data state on write operations. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service. It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code.

Authentication would not be properly validated when an already authenticated scope user would use the `use` method or `USE` clause to switch working databases in a session. If there was a user record in the new database with identical record identifier as the original record that the user authenticated with in the original database, this could result in the user being able to perform actions under the identity of the unrelated user in the new database. This issue does not affect system users at any level. By default, record identifiers are randomly generated with sufficient complexity to prevent the identifier collision required to trigger this issue. However, the issue may trigger in situations where multiple databases in the same SurrealDB instance are using explicitly defined or incremental record identifiers to identify users on an identically named table. ### Impact Under the circumstances described above, a user who has an authenticated session as a scope user in a database co...

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v4 7.0 ATTENTION: Low attack complexity Vendor: Siemens Equipment: TIA Portal and SIMATIC STEP 7 Vulnerability: Deserialization of Untrusted Data 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to cause a type confusion and execute arbitrary code within the affected application. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following products of Siemens, are affected: Totally Integrated Automation Portal (TIA Portal): All versions Totally Integrated Automation Portal (TIA Portal) V18: All versions SIMATIC STEP 7 Safety V18: All versions 3.2 Vulnerability Overview 3.2.1 DESERIALIZATION OF UNTRUSTED DA...

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v3 5.3 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: SIMATIC, SIMIT Vulnerability: Improperly Controlled Sequential Memory Allocation 2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to cause a high load situation, memory exhaustion, and may block the server. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following products of Siemens, are affected: SIMATIC Energy Manager Basic: Versions prior to V7.5 SIMATIC Energy Manager PRO: Versions prior to V7.5 SIMATIC IPC DiagBase: All versions SIMATIC IPC DiagMonitor: All versions SIMIT V10: All versions SIMIT V11: Versions p...

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF 1. EXECUTIVE SUMMARY CVSS v3 9.6 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: Remote Connect Server Vulnerabilities: Incorrect User Management, Unrestricted Upload of File with Dangerous Type, Forced Browsing, Improper Check for Unusual or Exceptional Conditions, Client-Side Enforcement of Server-Side Security, Incorrect Authorization, Creation of Temporary File With Insecure Permissions, Improper Restriction of Excessive Authentication Attempts, Incorrect Permission Assignment for Critical Resource, Allocation of Resources Without Limits or Throttling 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow ...