Detections
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AIX OpenSSL Advisory : openssl_advisory15.asc
medium Nessus Plugin ID 88085
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Synopsis
The remote AIX host has a version of OpenSSL installed that is affected by multiple vulnerabilities.Description
The version of OpenSSL installed on the remote AIX host is affected by multiple vulnerabilities :- A NULL pointer dereference flaw exists in file rsa_ameth.c when handling ASN.1 signatures that use the RSA PSS algorithm but are missing a mask generation function parameter. A remote attacker can exploit this to cause the signature verification routine to crash, leading to a denial of service. (CVE-2015-3194)
- A flaw exists in the ASN1_TFLG_COMBINE implementation in file tasn_dec.c related to handling malformed X509_ATTRIBUTE structures. A remote attacker can exploit this to cause a memory leak by triggering a decoding failure in a PKCS#7 or CMS application, resulting in a denial of service. (CVE-2015-3195)
- A race condition exists in s3_clnt.c that is triggered when PSK identity hints are incorrectly updated in the parent SSL_CTX structure when they are received by a multi-threaded client. A remote attacker can exploit this, via a crafted ServerKeyExchange message, to cause a double-free memory error, resulting in a denial of service. (CVE-2015-3196)
Solution
A fix is available and can be downloaded from the AIX website.See Also
https://aix.software.ibm.com/aix/efixes/security/openssl_advisory15.asc
https://www-01.ibm.com/marketing/iwm/iwm/web/preLogin.do?source=aixbp
Plugin Details
Severity: Medium
ID: 88085
File Name: aix_openssl_advisory15.nasl
Version: 1.14
Type: local
Family: AIX Local Security Checks
Published: 1/22/2016
Updated: 4/21/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Vulnerability Information
CPE: cpe:/o:ibm:aix, cpe:/a:openssl:openssl
Required KB Items: Host/AIX/version, Host/AIX/lslpp, Host/local_checks_enabled
Patch Publication Date: 1/18/2016
Vulnerability Publication Date: 12/3/2015