OpenSSL 1.0.1 < 1.0.1t Multiple Vulnerabilities

Medium Nessus Plugin ID 90890

Synopsis

The remote service is affected by multiple vulnerabilities.

Description

According to its banner, the remote host is running a version of OpenSSL 1.0.1 prior to 1.0.1t. It is, therefore, affected by the following vulnerabilities :

- A heap buffer overflow condition exists in the EVP_EncodeUpdate() function within file crypto/evp/encode.c that is triggered when handling a large amount of input data. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-2105)

- A heap buffer overflow condition exists in the EVP_EncryptUpdate() function within file crypto/evp/evp_enc.c that is triggered when handling a large amount of input data after a previous call occurs to the same function with a partial block. An unauthenticated, remote attacker can exploit this to cause a denial of service condition. (CVE-2016-2106)

- Flaws exist in the aesni_cbc_hmac_sha1_cipher() function in file crypto/evp/e_aes_cbc_hmac_sha1.c and the aesni_cbc_hmac_sha256_cipher() function in file crypto/evp/e_aes_cbc_hmac_sha256.c that are triggered when the connection uses an AES-CBC cipher and AES-NI is supported by the server. A man-in-the-middle attacker can exploit these to conduct a padding oracle attack, resulting in the ability to decrypt the network traffic.
(CVE-2016-2107)

- Multiple unspecified flaws exist in the d2i BIO functions when reading ASN.1 data from a BIO due to invalid encoding causing a large allocation of memory.
An unauthenticated, remote attacker can exploit these to cause a denial of service condition through resource exhaustion. (CVE-2016-2109)

- An out-of-bounds read error exists in the X509_NAME_oneline() function within file crypto/x509/x509_obj.c when handling very long ASN1 strings. An unauthenticated, remote attacker can exploit this to disclose the contents of stack memory.
(CVE-2016-2176)

Solution

Upgrade to OpenSSL version 1.0.1t or later.

See Also

https://www.openssl.org/news/secadv/20160503.txt

https://www.openssl.org/news/cl101.txt

Plugin Details

Severity: Medium

ID: 90890

File Name: openssl_1_0_1t.nasl

Version: 1.8

Type: remote

Family: Web Servers

Published: 2016/05/04

Updated: 2018/07/16

Dependencies: 57323

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5.8

Temporal Score: 4.5

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

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

Vulnerability Information

CPE: cpe:/a:openssl:openssl

Required KB Items: openssl/port

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/05/03

Vulnerability Publication Date: 2016/04/22

Reference Information

CVE: CVE-2016-2105, CVE-2016-2106, CVE-2016-2107, CVE-2016-2109, CVE-2016-2176

BID: 87940, 89744, 89746, 89757, 89760

EDB-ID: 39768