GnuTLS up to 3.6.6 Handshake Message uninitialized Pointer uninitialized pointer

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in GnuTLS up to 3.6.6. This vulnerability affects unknown code of the component Handshake Message Handler. Such manipulation leads to uninitialized pointer (uninitialized Pointer). This vulnerability is traded as CVE-2019-3836. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in GnuTLS up to 3.6.6 (Network Encryption Software) and classified as critical. Affected by this issue is an unknown part of the component Handshake Message Handler. The manipulation with an unknown input leads to a uninitialized pointer vulnerability (uninitialized Pointer). Using CWE to declare the problem leads to CWE-824. The product accesses or uses a pointer that has not been initialized. Impacted is availability. CVE summarizes:

It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versions 3.6.3 or later which can be triggered by certain post-handshake messages.

The bug was discovered 04/05/2019. The weakness was shared 04/01/2019 by Amir as confirmed bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is handled as CVE-2019-3836 since 01/03/2019. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 277785 (Fedora Security Update for gnutls (FEDORA-2019-e8c1cf958f)).

Upgrading to version 3.6.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 105138†). The entries VDB-102981, VDB-123135, VDB-123136 and VDB-123137 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 5.9
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: uninitialized Pointer
Class: Uninitialized pointer / uninitialized Pointer
CWE: CWE-824 / CWE-908
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GnuTLS 3.6.7

Timelineinfo

08/21/2018 🔍
01/03/2019 +135 days 🔍
04/01/2019 +88 days 🔍
04/01/2019 +0 days 🔍
04/05/2019 +4 days 🔍
08/21/2023 +1599 days 🔍

Sourcesinfo

Advisory: RHSA-2019:3600
Researcher: Amir
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-3836 (🔍)
GCVE (CVE): GCVE-0-2019-3836
GCVE (VulDB): GCVE-100-132674
SecurityFocus: 105138 - GnuTLS Multiple Information Disclosure Vulnerabilities

See also: 🔍

Entryinfo

Created: 04/01/2019 22:45
Updated: 08/21/2023 09:45
Changes: 04/01/2019 22:45 (63), 05/23/2020 14:35 (5), 08/21/2023 09:41 (4), 08/21/2023 09:45 (12)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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