GnuTLS up to 3.3.16/3.4.3 DN Handler Double-Free denial of service : 8/25/2015 5:08:18 AM
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GnuTLS up to 3.3.16/3.4.3 DN Handler Double-Free denial of service
8/23/2015 7:00:00 PM
General
scipID: 77427
Affected: GnuTLS up to 3.3.16/3.4.3
Published: 08/24/2015
Risk: problematic
Created: 08/25/2015
Entry: 68.9% complete
Summary
A vulnerability classified as problematic has been found in GnuTLS up to 3.3.16/3.4.3. This affects an unknown function of the component DN Handler. The manipulation with an unknown input leads to a denial of service vulnerability (double-free). This is going to have an impact on availability.
The weakness was disclosed 08/24/2015. This vulnerability is uniquely identified as CVE-2015-6251. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.
The vulnerability scanner Nessus provides a plugin with the ID 85357 (Debian DSA-3334-1 : gnutls28 – security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks.
Upgrading to version 3.3.17 or 3.4.4 eliminates this vulnerability.CVSS
Base Score: 4.3 (CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P) [?]
Temp Score: 3.7 (CVSS2#E:ND/RL:OF/RC:ND) [?]
CPE
Exploiting
Class: Denial of service
Local: No
Remote: Yes
Availability: No
Nessus ID: 85357
Nessus Name: Debian DSA-3334-1 : gnutls28 – security update
Nessus File: debian_DSA-3334.nasl
Nessus Family: Debian Local Security Checks
Countermeasures
Recommended: Upgrade
Status: Official fix
0-Day Time: 0 days since found
Upgrade: GnuTLS 3.3.17/3.4.4
Timeline
08/24/2015 | Advisory disclosed
08/25/2015 | VulDB entry created
08/25/2015 | VulDB entry updated
Sources
CVE: CVE-2015-6251 (mitre.org) (nvd.nist.org) (cvedetails.com)
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