Cisco NX-OS OpenSSL Multiple Vulnerabilities

High Nessus Plugin ID 88991

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

The remote Cisco device is running a version of NX-OS software that is affected by multiple vulnerabilities in the bundled OpenSSL library :

- An error exists in the function 'ssl3_read_bytes' that could allow data to be injected into other sessions or allow denial of service attacks. Note this issue is only exploitable if 'SSL_MODE_RELEASE_BUFFERS' is enabled. (CVE-2010-5298)

- An error exists related to the implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA) that could allow nonce disclosure via the 'FLUSH+RELOAD' cache side-channel attack. (CVE-2014-0076)

- A buffer overflow error exists related to invalid DTLS fragment handling that could lead to execution of arbitrary code. Note this issue only affects OpenSSL when used as a DTLS client or server. (CVE-2014-0195)

- An error exists in the function 'do_ssl3_write' that could allow a NULL pointer to be dereferenced leading to denial of service attacks. Note this issue is exploitable only if 'SSL_MODE_RELEASE_BUFFERS' is enabled. (CVE-2014-0198)

- An error exists related to DTLS handshake handling that could lead to denial of service attacks. Note this issue only affects OpenSSL when used as a DTLS client.
(CVE-2014-0221)

- An unspecified error exists that could allow an attacker to cause usage of weak keying material leading to simplified man-in-the-middle attacks.
(CVE-2014-0224)

- An unspecified error exists related to anonymous ECDH ciphersuites that could allow denial of service attacks. Note this issue only affects OpenSSL TLS clients. (CVE-2014-3470)

- An integer underflow condition exists in the EVP_DecodeUpdate() function due to improper validation of base64 encoded input when decoding. This allows a remote attacker, using maliciously crafted base64 data, to cause a segmentation fault or memory corruption, resulting in a denial of service or possibly the execution of arbitrary code. (CVE-2015-0292)

Solution

Upgrade to the relevant fixed version referenced in the Cisco advisory.

See Also

http://www.nessus.org/u?0aa6a7e6

https://www.openssl.org/news/secadv/20140605.txt

https://www.openssl.org/news/secadv/20150319.txt

https://www.openssl.org/news/vulnerabilities.html

http://eprint.iacr.org/2014/140

https://www.imperialviolet.org/2014/06/05/earlyccs.html

Plugin Details

Severity: High

ID: 88991

File Name: cisco-sa-20140605-openssl-nxos.nasl

Version: 1.9

Type: local

Family: CISCO

Published: 2016/02/26

Updated: 2019/04/11

Dependencies: 66696

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9.3

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/o:cisco:nx-os

Required KB Items: Host/Cisco/NX-OS/Version, Host/Cisco/NX-OS/Device, Host/Cisco/NX-OS/Model

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2014/06/05

Vulnerability Publication Date: 2014/02/24

Reference Information

CVE: CVE-2010-5298, CVE-2014-0076, CVE-2014-0195, CVE-2014-0198, CVE-2014-0221, CVE-2014-0224, CVE-2014-3470, CVE-2015-0292

BID: 66363, 66801, 67193, 67898, 67899, 67900, 67901, 73228