| VID |
22549 |
| Severity |
40 |
| Port |
80, ... |
| Protocol |
TCP |
| Class |
WWW |
| Detailed Description |
According to its banner, the remote web server is running a version of OpenSSL earlier than 0.9.8w. As such, the OpenSSL library itself is reportedly affected by a memory corruption vulnerability via an integer truncation error in the function 'asn1_d2i_read_bio' when reading ASN.1 DER format data.
Applications using the 'BIO' or 'FILE' based functions (i.e., 'd2i_*_bio' or 'd2i_*_fp' functions) are affected by this issue. Also affected are 'S/MIME' or 'CMS' applications using 'SMIME_read_PKCS7' or 'SMIME_read_CMS' parsers. The OpenSSL command line utility is affected if used to handle untrusted DER formatted data.
Note that the SSL/TLS code of OpenSSL is not affected. Also not affected are applications using memory-based ASN.1 functions (e.g., 'd2i_X509', 'd2i_PKCS12', etc.) nor are applications using only PEM functions.
Note also that the original fix for CVE-2012-2110 in 0.9.8v was incomplete because the functions 'BUF_MEM_grow' and 'BUF_MEM_grow_clean', in file 'openssl/crypto/buffer/buffer.c', did not properly account for negative values of the argument 'len'.
* References:
http://openssl.org/news/secadv_20120419.txt
http://seclists.org/fulldisclosure/2012/Apr/210
http://openssl.org/news/secadv_20120424.txt
http://cvs.openssl.org/chngview?cn=22479
http://www.openssl.org/news/changelog.html
* Platforms Affected:
OpenSSL 0.9.8 before 0.9.8w |
| Recommendation |
Upgrade to the latest version of OpenSSL (0.9.8w or later), available from the OpenSSL Web site at http://www.openssl.org/ |
| Related URL |
CVE-2012-2110,CVE-2012-2131 (CVE) |
| Related URL |
53158,53212 (SecurityFocus) |
| Related URL |
(ISS) |
|
