GNU GnuTLS 3.3.13 CRL Distribution Points double free

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in GNU GnuTLS 3.3.13 and classified as problematic. This vulnerability affects unknown code of the component CRL Distribution Points. Executing a manipulation can lead to double free. This vulnerability is registered as CVE-2015-3308. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in GNU GnuTLS 3.3.13 (Network Encryption Software) and classified as problematic. This vulnerability affects an unknown code of the component CRL Distribution Points. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect availability. CVE summarizes:

Double free vulnerability in lib/x509/x509_ext.c in GnuTLS before 3.3.14 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted CRL distribution point.

The weakness was published 04/15/2015 by Robert Swiecki as confirmed mailinglist post (oss-sec). The advisory is shared for download at seclists.org. This vulnerability was named CVE-2015-3308 since 04/16/2015. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 82949 (Fedora 22 : gnutls-3.3.14-1.fc22 (2015-5131)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196228 (Ubuntu Security Notification for Gnutls28 Vulnerabilities (USN-2727-1)).

Upgrading to version 3.3.14 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (102495), Tenable (82949), SecurityFocus (BID 74188†) and Vulnerability Center (SBV-50773†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 82949
Nessus Name: Fedora 22 : gnutls-3.3.14-1.fc22 (2015-5131)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for gnutls FEDORA-2015-5131
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GnuTLS 3.3.14
Patch: gitlab.com

Timelineinfo

04/15/2015 🔍
04/16/2015 +1 days 🔍
04/16/2015 +0 days 🔍
04/22/2015 +6 days 🔍
04/22/2015 +0 days 🔍
04/23/2015 +1 days 🔍
06/30/2015 +68 days 🔍
09/02/2015 +64 days 🔍
05/09/2022 +2441 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: USN-2727-1
Researcher: Robert Swiecki
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-3308 (🔍)
GCVE (CVE): GCVE-0-2015-3308
GCVE (VulDB): GCVE-100-75100
X-Force: 102495 - GnuTLS CRL distribution points denial of service
SecurityFocus: 74188 - GnuTLS 'x509_ext.c' Use After Free Denial of Service Vulnerability
SecurityTracker: 1033774
Vulnerability Center: 50773 - GnuTLS <3.3.15 Remote DoS due to Unverified ServerKeyExchange Signature, Medium

Entryinfo

Created: 04/23/2015 09:54
Updated: 05/09/2022 16:34
Changes: 04/23/2015 09:54 (68), 07/02/2017 12:06 (9), 05/09/2022 16:27 (5), 05/09/2022 16:34 (1)
Complete: 🔍
Cache ID: 216:AD4:103

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