GnuTLS up to 3.5.9 opencdk/read-packet.c cdk_pkt_read out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in GnuTLS up to 3.5.9. This impacts the function cdk_pkt_read of the file opencdk/read-packet.c. Executing a manipulation can lead to out-of-bounds write. This vulnerability is handled as CVE-2017-7869. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in GnuTLS up to 3.5.9 (Network Encryption Software). This vulnerability affects the function cdk_pkt_read of the file opencdk/read-packet.c. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

GnuTLS before 2017-02-20 has an out-of-bounds write caused by an integer overflow and heap-based buffer overflow related to the cdk_pkt_read function in opencdk/read-packet.c. This issue (which is a subset of the vendor's GNUTLS-SA-2017-3 report) is fixed in 3.5.10.

The bug was discovered 04/14/2017. The weakness was released 04/14/2017 (Website). The advisory is shared for download at gnutls.org. This vulnerability was named CVE-2017-7869 since 04/14/2017. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 102759 (CentOS 7 : gnutls (CESA-2017:2292)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196812 (Ubuntu Security Notification for Gnutls26, Gnutls28 Vulnerabilities (USN-3318-1)).

Upgrading to version 3.5.10 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (102759) and SecurityFocus (BID 97040†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
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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Nessus ID: 102759
Nessus Name: CentOS 7 : gnutls (CESA-2017:2292)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 871165
OpenVAS Name: RedHat Update for gnutls RHSA-2017:2292-01
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 3.5.10
Patch: gitlab.com

Timelineinfo

02/20/2017 🔍
03/23/2017 +31 days 🔍
04/14/2017 +22 days 🔍
04/14/2017 +0 days 🔍
04/14/2017 +0 days 🔍
04/14/2017 +0 days 🔍
04/14/2017 +0 days 🔍
08/25/2017 +133 days 🔍
11/29/2022 +1922 days 🔍

Sourcesinfo

Advisory: RHSA-2017:2292
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-7869 (🔍)
GCVE (CVE): GCVE-0-2017-7869
GCVE (VulDB): GCVE-100-99856
SecurityFocus: 97040 - GnuTLS GNUTLS-SA-2017-3 Multiple Security Vulnerabilities
OSVDB: - CVE-2017-7869 - GnuTLS - Memory Corruption Issue

Entryinfo

Created: 04/14/2017 11:14
Updated: 11/29/2022 12:00
Changes: 04/14/2017 11:14 (79), 11/29/2022 12:00 (5)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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