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CVE-2022-20933: Cisco Security Advisory: Cisco Meraki MX and Z3 Teleworker Gateway VPN Denial of Service Vulnerability

A vulnerability in the Cisco AnyConnect VPN server of Cisco Meraki MX and Cisco Meraki Z3 Teleworker Gateway devices could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient validation of client-supplied parameters while establishing an SSL VPN session. An attacker could exploit this vulnerability by crafting a malicious request and sending it to the affected device. A successful exploit could allow the attacker to cause the Cisco AnyConnect VPN server to crash and restart, resulting in the failure of the established SSL VPN connections and forcing remote users to initiate a new VPN connection and re-authenticate. A sustained attack could prevent new SSL VPN connections from being established. Note: When the attack traffic stops, the Cisco AnyConnect VPN server recovers gracefully without requiring manual intervention. Cisco Meraki has released software updates that address this vulnera...

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#vulnerability#ios#cisco#dos#auth#ssl
Ubuntu Security Notice USN-5700-1

Ubuntu Security Notice 5700-1 - David Bouman and Billy Jheng Bing Jhong discovered that a race condition existed in the io_uring subsystem in the Linux kernel, leading to a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Soenke Huster discovered that an integer overflow vulnerability existed in the WiFi driver stack in the Linux kernel, leading to a buffer overflow. A physically proximate attacker could use this to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice USN-5688-2

Ubuntu Security Notice 5688-2 - USN-5688-1 fixed vulnerabilities in Libksba. This update provides the corresponding update for Ubuntu 22.10. It was discovered that an integer overflow could be triggered in Libksba when decoding certain data. An attacker could use this issue to cause a denial of service or possibly execute arbitrary code.

Ubuntu Security Notice USN-5699-1

Ubuntu Security Notice 5699-1 - Jan Engelhardt, Tavis Ormandy, and others discovered that the GNU C Library iconv feature incorrectly handled certain input sequences. An attacker could possibly use this issue to cause the GNU C Library to hang or crash, resulting in a denial of service. It was discovered that the GNU C Library nscd daemon incorrectly handled certain netgroup lookups. An attacker could possibly use this issue to cause the GNU C Library to crash, resulting in a denial of service.

Red Hat Security Advisory 2022-7184-01

Red Hat Security Advisory 2022-7184-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2022-7183-01

Red Hat Security Advisory 2022-7183-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2022-7181-01

Red Hat Security Advisory 2022-7181-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2022-7178-01

Red Hat Security Advisory 2022-7178-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2022-7190-01

Red Hat Security Advisory 2022-7190-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.

Red Hat Security Advisory 2022-7182-01

Red Hat Security Advisory 2022-7182-01 - Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 102.4.0. Issues addressed include a denial of service vulnerability.