OpenSSL < 0.9.8zf / 1.0.0r / 1.0.1m / 1.0.2a Multiple Vulnerabilities

Medium Log Correlation Engine Plugin ID 801937

Synopsis

The remote web server is affected by multiple vulnerabilities.

Description

The remote host is running a version of OpenSSL which is potentially affected by the following vulnerabilities :

- A use-after-free condition exists in the d2i_ECPrivateKey() function due to improper processing of malformed EC private key files during import. A remote attacker can exploit this to dereference or free already freed memory, resulting in a denial of service or other unspecified impact. (CVE-2015-0209)

- An invalid read flaw exists in the ASN1_TYPE_cmp() function due to improperly performed boolean-type comparisons. A remote attacker can exploit this, via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature, to cause an invalid read operation, resulting in a denial of service. (CVE-2015-0286)

- A flaw exists in the ASN1_item_ex_d2i() function due to a failure to reinitialize 'CHOICE' and 'ADB' data structures when reusing a structure in ASN.1 parsing. This allows a remote attacker to cause an invalid write operation and memory corruption, resulting in a denial of service. (CVE-2015-0287)

- A NULL pointer dereference flaw exists in the PKCS#7 parsing code due to incorrect handling of missing outer ContentInfo. This allows a remote attacker, using an application that processes arbitrary PKCS#7 data and providing malformed data with ASN.1 encoding, to cause a denial of service. (CVE-2015-0288)

- The PKCS#7 implementation does not properly handle a lack of outer ContentInfo, which allows attackers to cause a denial of service by leveraging an application that processes arbitrary PKCS#7 data and providing malformed data with ASN.1 encoding. (CVE-2015-0289)

- A flaw exists in servers that both support SSLv2 and enable export cipher suites due to improper implementation of SSLv2. A remote attacker can exploit this, via a crafted CLIENT-MASTER-KEY message, to cause a denial of service. (CVE-2015-0293)

Solution

Upgrade to OpenSSL 0.9.8zf, 1.0.0r, 1.0.1m, 1.0.2a, or later.

See Also

http://openssl.org/news/secadv_20150319.txt

Plugin Details

Severity: Medium

ID: 801937

File Name: 801937.prm

Family: Web Servers

Published: 2015/03/19

Nessus ID: 82030, 82031, 82032, 82033

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 6.8

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

Patch Publication Date: 2015/03/19

Vulnerability Publication Date: 2015/03/19

Reference Information

CVE: CVE-2015-0209, CVE-2015-0286, CVE-2015-0287, CVE-2015-0288, CVE-2015-0289, CVE-2015-0293

BID: 73239, 73225, 73227, 73237, 73231, 73232