ID de Prueba:	1.3.6.1.4.1.25623.1.0.147808
Categoría:	Denial of Service
Título:	OpenSSL: Infinite loop in BN_mod_sqrt() reachable when parsing certificates (CVE-2022-0778) - Windows
Resumen:	OpenSSL is prone to an infinite loop vulnerability.
Descripción:	Summary: OpenSSL is prone to an infinite loop vulnerability. Vulnerability Insight: The BN_mod_sqrt() function, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters. Thus vulnerable situations include: - TLS clients consuming server certificates - TLS servers consuming client certificates - Hosting providers taking certificates or private keys from customers - Certificate authorities parsing certification requests from subscribers - Anything else which parses ASN.1 elliptic curve parameters Also any other applications that use the BN_mod_sqrt() where the attacker can control the parameter values are vulnerable to this DoS issue. In the OpenSSL 1.0.2 version the public key is not parsed during initial parsing of the certificate which makes it slightly harder to trigger the infinite loop. However any operation which requires the public key from the certificate will trigger the infinite loop. In particular the attacker can use a self-signed certificate to trigger the loop during verification of the certificate signature. Affected Software/OS: OpenSSL version 1.0.2, 1.1.1 and 3.0.0. Solution: Update to version 1.0.2zd, 1.1.1n, 3.0.2 or later. CVSS Score: 5.0 CVSS Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2022-0778 https://cert-portal.siemens.com/productcert/pdf/ssa-712929.pdf https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=3118eb64934499d93db3230748a452351d1d9a65 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=380085481c64de749a6dd25cdf0bcf4360b30f83 https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=a466912611aa6cbdf550cd10601390e587451246 https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0002 https://security.netapp.com/advisory/ntap-20220321-0002/ https://security.netapp.com/advisory/ntap-20220429-0005/ https://support.apple.com/kb/HT213255 https://support.apple.com/kb/HT213256 https://support.apple.com/kb/HT213257 https://www.openssl.org/news/secadv/20220315.txt https://www.tenable.com/security/tns-2022-06 https://www.tenable.com/security/tns-2022-07 https://www.tenable.com/security/tns-2022-08 https://www.tenable.com/security/tns-2022-09 Debian Security Information: DSA-5103 (Google Search) https://www.debian.org/security/2022/dsa-5103 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W6K3PR542DXWLEFFMFIDMME4CWMHJRMG/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/323SNN6ZX7PRJJWP2BUAFLPUAE42XWLZ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GDB3GQVJPXJE7X5C5JN6JAA4XUDWD6E6/ http://seclists.org/fulldisclosure/2022/May/38 http://seclists.org/fulldisclosure/2022/May/35 http://seclists.org/fulldisclosure/2022/May/33 https://security.gentoo.org/glsa/202210-02 http://packetstormsecurity.com/files/167344/OpenSSL-1.0.2-1.1.1-3.0-BN_mod_sqrt-Infinite-Loop.html https://www.oracle.com/security-alerts/cpuapr2022.html https://www.oracle.com/security-alerts/cpujul2022.html https://lists.debian.org/debian-lts-announce/2022/03/msg00023.html https://lists.debian.org/debian-lts-announce/2022/03/msg00024.html
Copyright	Copyright (C) 2022 Greenbone Networks GmbH

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