csaf_microsoft - msrc

msrc_cve-2022-0778

Vulnerability from csaf_microsoft

Published

2022-03-02 00:00

Modified

2024-09-11 00:00

Summary

Infinite loop in BN_mod_sqrt() reachable when parsing certificates

Notes

Additional Resources

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer

The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

JSON

To clipboard

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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "temporalScore": 7.5,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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  ]
}

CVE-2022-0778 (GCVE-0-2022-0778)

Vulnerability from cvelistv5

Published

2022-03-15 17:05

Modified

2024-09-17 00:01

Severity ?

CWE

Infinite loop

Summary

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. This issue affects OpenSSL versions 1.0.2, 1.1.1 and 3.0. It was addressed in the releases of 1.1.1n and 3.0.2 on the 15th March 2022. Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1). Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m). Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc).

References

URL

Tags

	https://www.openssl.org/news/secadv/20220315.txt
	https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=a466912611aa6cbdf550cd10601390e587451246
	https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=3118eb64934499d93db3230748a452351d1d9a65
	https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=380085481c64de749a6dd25cdf0bcf4360b30f83
	https://www.debian.org/security/2022/dsa-5103	vendor-advisory
	https://lists.debian.org/debian-lts-announce/2022/03/msg00023.html	mailing-list
	https://lists.debian.org/debian-lts-announce/2022/03/msg00024.html	mailing-list
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GDB3GQVJPXJE7X5C5JN6JAA4XUDWD6E6/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/323SNN6ZX7PRJJWP2BUAFLPUAE42XWLZ/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W6K3PR542DXWLEFFMFIDMME4CWMHJRMG/	vendor-advisory
	https://www.oracle.com/security-alerts/cpuapr2022.html
	https://security.netapp.com/advisory/ntap-20220321-0002/
	https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0002
	https://www.tenable.com/security/tns-2022-06
	https://www.tenable.com/security/tns-2022-07
	https://www.tenable.com/security/tns-2022-08
	http://seclists.org/fulldisclosure/2022/May/33	mailing-list
	http://seclists.org/fulldisclosure/2022/May/35	mailing-list
	http://seclists.org/fulldisclosure/2022/May/38	mailing-list
	https://www.oracle.com/security-alerts/cpujul2022.html
	https://support.apple.com/kb/HT213257
	https://support.apple.com/kb/HT213256
	https://support.apple.com/kb/HT213255
	https://www.tenable.com/security/tns-2022-09
	https://security.netapp.com/advisory/ntap-20220429-0005/
	http://packetstormsecurity.com/files/167344/OpenSSL-1.0.2-1.1.1-3.0-BN_mod_sqrt-Infinite-Loop.html
	https://cert-portal.siemens.com/productcert/pdf/ssa-712929.pdf
	https://security.gentoo.org/glsa/202210-02	vendor-advisory
	https://security.netapp.com/advisory/ntap-20240621-0006/

Impacted products

	Vendor	Product	Version
	OpenSSL	OpenSSL	Version: Fixed in OpenSSL 3.0.2 (Affected 3.0.0,3.0.1) Version: Fixed in OpenSSL 1.1.1n (Affected 1.1.1-1.1.1m) Version: Fixed in OpenSSL 1.0.2zd (Affected 1.0.2-1.0.2zc)

Show details on NVD website