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OpenSSL Multiple Vulnerabilities -19 Jun16 (Linux)

Information

Severity

Severity

High

Family

Family

General

CVSSv2 Base

CVSSv2 Base

7.5

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

7 years ago

Modified

Modified

5 years ago

Summary

This host is running OpenSSL and is prone to multiple vulnerabilities.

Insight

Insight

Multiple flaws are due to: 1. Incorrectly using of pointer arithmetic for heap-buffer boundary checks which might allow remote attackers to cause a denial of service or possibly have unspecified other impact by leveraging unexpected malloc behavior, related to s3_srvr.c, ssl_sess.c, and t1_lib.c. 2. Improperly use of constant-time operations in crypto/dsa/dsa_oss.c which allow local users to breach the DSA private key.

Affected Software

Affected Software

OpenSSL 1.0.2h and previous versions.

Detection Method

Detection Method

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

Solution

Solution

For the undefined pointer arithmetic vulnerability, there is a fix available for OpenSSL 1.0.2 and OpenSSL 1.0.1. To prevent DSA private key breach, a fix is available, too.

Common Vulnerabilities and Exposures (CVE)