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FreeBSD : OpenSSL -- Multiple problems in crypto(3) (0f37d765-c5d4-11db-9f82-000e0c2e438a)
critical Nessus Plugin ID 24719
Synopsis
The remote FreeBSD host is missing one or more security-related updates.Description
Several problems have been found in OpenSSL :- During the parsing of certain invalid ASN1 structures an error condition is mishandled, possibly resulting in an infinite loop.
- A buffer overflow exists in the SSL_get_shared_ciphers function.
- A NULL pointer may be dereferenced in the SSL version 2 client code.
In addition, many applications using OpenSSL do not perform any validation of the lengths of public keys being used. Impact : Servers which parse ASN1 data from untrusted sources may be vulnerable to a denial of service attack.
An attacker accessing a server which uses SSL version 2 may be able to execute arbitrary code with the privileges of that server.
A malicious SSL server can cause clients connecting using SSL version 2 to crash.
Applications which perform public key operations using untrusted keys may be vulnerable to a denial of service attack. Workaround : No workaround is available, but not all of the vulnerabilities mentioned affect all applications.
Solution
Update the affected packages.See Also
Plugin Details
Severity: Critical
ID: 24719
File Name: freebsd_pkg_0f37d765c5d411db9f82000e0c2e438a.nasl
Version: 1.22
Type: local
Family: FreeBSD Local Security Checks
Published: 2/27/2007
Updated: 1/6/2021
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: Critical
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: p-cpe:/a:freebsd:freebsd:openssl, cpe:/o:freebsd:freebsd
Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info
Patch Publication Date: 2/26/2007
Vulnerability Publication Date: 9/28/2006
Reference Information
CVE: CVE-2006-2937, CVE-2006-2940, CVE-2006-3738, CVE-2006-4343