CVSS: 6.7EPSS: 0%CPEs: 2EXPL: 0CVE-2021-20100
https://notcve.org/view.php?id=CVE-2021-20100
Nessus Agent 8.2.4 and earlier for Windows were found to contain multiple local privilege escalation vulnerabilities which could allow an authenticated, local administrator to run specific Windows executables as the Nessus host. This is different than CVE-2021-20099. Se ha detectado que Nessus Agent versiones 8.2.4 y anteriores para Windows contienen múltiples vulnerabilidades de escalada de privilegios local que podrían permitir a un administrador local autenticado ejecutar determinados ejecutables de Windows como el host de Nessus. Esto es diferente de CVE-2021-20099 • https://www.tenable.com/security/tns-2021-12 •
CVSS: 6.7EPSS: 0%CPEs: 2EXPL: 0CVE-2021-20099
https://notcve.org/view.php?id=CVE-2021-20099
Nessus Agent 8.2.4 and earlier for Windows were found to contain multiple local privilege escalation vulnerabilities which could allow an authenticated, local administrator to run specific Windows executables as the Nessus host. This is different than CVE-2021-20100. Se ha detectado que Nessus Agent versiones 8.2.4 y anteriores para Windows contienen múltiples vulnerabilidades de escalada de privilegios locales que podrían permitir a un administrador local autenticado ejecutar determinados ejecutables de Windows como host de Nessus. Esto es diferente de CVE-2021-20100 • https://www.tenable.com/security/tns-2021-12 •
CVSS: 7.4EPSS: 0%CPEs: 56EXPL: 0CVE-2021-3450 – CA certificate check bypass with X509_V_FLAG_X509_STRICT
https://notcve.org/view.php?id=CVE-2021-3450
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. • http://www.openwall.com/lists/oss-security/2021/03/27/1 http://www.openwall.com/lists/oss-security/2021/03/27/2 http://www.openwall.com/lists/oss-security/2021/03/28/3 http://www.openwall.com/lists/oss-security/2021/03/28/4 https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845 https://kc.mc • CWE-295: Improper Certificate Validation •
CVSS: 5.9EPSS: 0%CPEs: 205EXPL: 0CVE-2021-3449 – NULL pointer deref in signature_algorithms processing
https://notcve.org/view.php?id=CVE-2021-3449
An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. • http://www.openwall.com/lists/oss-security/2021/03/27/1 http://www.openwall.com/lists/oss-security/2021/03/27/2 http://www.openwall.com/lists/oss-security/2021/03/28/3 http://www.openwall.com/lists/oss-security/2021/03/28/4 https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-772220.pdf https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=fb9fa6b51defd48157eeb207f52181f735d96148 https://kb.pulse • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2020-5793
https://notcve.org/view.php?id=CVE-2020-5793
A vulnerability in Nessus versions 8.9.0 through 8.12.0 for Windows & Nessus Agent 8.0.0 and 8.1.0 for Windows could allow an authenticated local attacker to copy user-supplied files to a specially constructed path in a specifically named user directory. An attacker could exploit this vulnerability by creating a malicious file and copying the file to a system directory. The attacker needs valid credentials on the Windows system to exploit this vulnerability. Una vulnerabilidad en Nessus versiones 8.9.0 a 8.12.0, para Windows y Nessus Agent versiones 8.0.0 y 8.1.0 para Windows, podría permitir a un atacante local autenticado copiar archivos suministrados por el usuario en una ruta especialmente construida en un directorio de usuario con nombre específico. Un atacante podría explotar esta vulnerabilidad mediante la creación de un archivo malicioso y copiar el archivo en un directorio del sistema. • https://www.tenable.com/security/tns-2020-07 https://www.tenable.com/security/tns-2020-08 •