| VID |
22727 |
| Severity |
30 |
| Port |
80, ... |
| Protocol |
TCP |
| Class |
WWW |
| Detailed 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)
* References:
https://www.openssl.org/news/secadv/20160503.txt
https://www.openssl.org/news/cl101.txt
* Platforms Affected:
OpenSSL 1.0.1 before 1.0.1t
Linux Any version
Unix Any version
Microsoft Windows Any version |
| Recommendation |
Upgrade to the latest version of OpenSSL (1.0.1t or later), available from the OpenSSL Web site at http://www.openssl.org/ |
| Related URL |
CVE-2016-2105,CVE-2016-2106,CVE-2016-2107,CVE-2016-2109,CVE-2016-2176 (CVE) |
| Related URL |
(SecurityFocus) |
| Related URL |
(ISS) |
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