GNU GnuTLS up to 3.0.8 Signature cryptographic issues

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

A vulnerability has been found in GNU GnuTLS up to 3.0.8 (Network Encryption Software) and classified as critical. This vulnerability affects an unknown code of the component Signature. The manipulation with an unknown input leads to a cryptographic issues vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect integrity. CVE summarizes:

GnuTLS before 3.1.0 does not verify that the RSA PKCS #1 signature algorithm matches the signature algorithm in the certificate, which allows remote attackers to conduct downgrade attacks via unspecified vectors.

The weakness was published 03/24/2015 (Website). The advisory is available at gnutls.org. This vulnerability was named CVE-2015-0282 since 11/18/2014. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 81835 (Debian DSA-3191-1 : gnutls26 - 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350127 (Amazon Linux Security Advisory for gnutls: ALAS-2015-575).

Upgrading to version 3.0.9 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (102423), Tenable (81835), SecurityFocus (BID 73119†), SecurityTracker (ID 1032148†) and Vulnerability Center (SBV-49201†). Similar entry is available at VDB-12323.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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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

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Cryptographic issues
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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Nessus ID: 81835
Nessus Name: Debian DSA-3191-1 : gnutls26 - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: ALAS-2015-575
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GnuTLS 3.0.9

Timelineinfo

11/18/2014 🔍
02/19/2015 +93 days 🔍
03/16/2015 +25 days 🔍
03/17/2015 +1 days 🔍
03/24/2015 +7 days 🔍
03/24/2015 +0 days 🔍
03/25/2015 +1 days 🔍
03/30/2015 +5 days 🔍
04/17/2015 +18 days 🔍
05/01/2022 +2571 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: RHSA-2015:1457
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-0282 (🔍)
OVAL: 🔍

X-Force: 102423 - GnuTLS RSA PKCS security bypass
SecurityFocus: 73119 - GnuTLS CVE-2015-0282 Certificate Validation Security Bypass Vulnerability
SecurityTracker: 1032148 - GnuTLS Certificate Validation Flaw Lets Remote Users Force a Signature Algorithm Downgrade
Vulnerability Center: 49201 - GnuTLS before 3.1.0 Remote Weak Encryption due to RSA PKCS #1 Signature Verification, Medium

See also: 🔍

Entryinfo

Created: 03/30/2015 12:43 PM
Updated: 05/01/2022 05:27 PM
Changes: 03/30/2015 12:43 PM (74), 06/23/2017 10:35 AM (8), 05/01/2022 05:21 PM (3), 05/01/2022 05:27 PM (1)
Complete: 🔍
Cache ID: 18:EFB:40

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