Vulnerability Details

OpenSSL Multiple Denial of Service Vulnerabilities -02 Dec15 (Windows)

Published: 2015-12-01 04:11:47
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P

Detection Type:
Remote Banner

Summary:
This host is running OpenSSL and is prone to multiple denial of service vulnerabilities.

Detection Method:
Checks if a vulnerable version is present on the target host.

Technical Details:
Multiple flaws are due to: - An out-of-bounds read vulnerability in 'X509_cmp_time' function in 'crypto/x509/x509_vfy.c' script. - NULL pointer dereference vulnerability in 'PKCS7_dataDecodefunction' in 'crypto/pkcs7/pk7_doit.c' script. - 'ssl3_get_new_session_ticket' function in 'ssl/s3_clnt.c' script causes race condition while handling NewSessionTicket. - 'do_free_upto' function in 'crypto/cms/cms_smime.c' script verify infinite loop with unknown hash function.

Impact:
Successful exploitation will allow a remote attacker to cause a denial of service or possibly have unspecified other impact.

Affected Versions:
OpenSSL versions before 0.9.8zg, 1.0.0 before 1.0.0s, 1.0.1 before 1.0.1n, and 1.0.2 before 1.0.2b on Windows

Recommendations:
Upgrade to OpenSSL 0.9.8zg, or 1.0.0s or 1.0.1n or 1.0.2b or later.

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2015-1789
https://nvd.nist.gov/vuln/detail/CVE-2015-1790
https://nvd.nist.gov/vuln/detail/CVE-2015-1791
https://nvd.nist.gov/vuln/detail/CVE-2015-1792

SecurityFocus Bugtraq ID:

https://www.securityfocus.com/bid/75156
https://www.securityfocus.com/bid/75157
https://www.securityfocus.com/bid/75161
https://www.securityfocus.com/bid/75154

References:

https://www.openssl.org/news/secadv/20150611.txt

Severity
Medium
CVSS Score
6.8
Published
2015-12-01
Modified
2019-02-27
Category
General

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