gnu gnutls up to 1.0.18 Padding lib/gnutls_cipher.c _gnutls_ciphertext2compressed numeric error

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.8	$0-$5k	0.00

Summaryinfo

A vulnerability described as problematic has been identified in gnu gnutls up to 1.0.18. This vulnerability affects the function _gnutls_ciphertext2compressed in the library lib/gnutls_cipher.c of the component Padding. The manipulation results in numeric error. This vulnerability is cataloged as CVE-2008-1950. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in gnu gnutls up to 1.0.18 (Network Encryption Software). Affected is the function _gnutls_ciphertext2compressed in the library lib/gnutls_cipher.c of the component Padding. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on availability. CVE summarizes:

Integer signedness error in the _gnutls_ciphertext2compressed function in lib/gnutls_cipher.c in libgnutls in GnuTLS before 2.2.4 allows remote attackers to cause a denial of service (buffer over-read and crash) via a certain integer value in the Random field in an encrypted Client Hello message within a TLS record with an invalid Record Length, which leads to an invalid cipher padding length, aka GNUTLS-SA-2008-1-3.

The bug was discovered 05/19/2008. The weakness was shared 05/21/2008 with Codenomicon as confirmed advisory (CERT.org). The advisory is available at kb.cert.org. This vulnerability is traded as CVE-2008-1950 since 04/24/2008. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 43688 (CentOS 5 : gnutls (CESA-2008:0489)), 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 165699 (SUSE Enterprise Linux Security Update gnutls (SUSE-SA:2008:046)).

Upgrading to version 1.0.19 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (42533), Tenable (43688), SecurityFocus (BID 29292†), OSVDB (45384†) and Secunia (SA30287†). The entries VDB-42473 and VDB-42472 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Network Encryption Software

Vendor

• gnu

Name

• gnutls

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13
• 1.0.14
• 1.0.15
• 1.0.16
• 1.0.17
• 1.0.18

License

• open-source

Website

• Vendor: https://www.gnu.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 43688
Nessus Name: CentOS 5 : gnutls (CESA-2008:0489)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 61034
OpenVAS Name: Debian Security Advisory DSA 1581-1 (gnutls13)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: gnutls 1.0.19

Timelineinfo

04/24/2008 🔍
05/19/2008 +25 days 🔍
05/19/2008 +0 days 🔍
05/20/2008 +1 days 🔍
05/20/2008 +0 days 🔍
05/21/2008 +1 days 🔍
05/21/2008 +0 days 🔍
05/21/2008 +0 days 🔍
05/25/2008 +4 days 🔍
01/06/2010 +591 days 🔍
03/16/2015 +1895 days 🔍
12/30/2024 +3577 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: kb.cert.org
Organization: Codenomicon
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-1950 (🔍)
GCVE (CVE): GCVE-0-2008-1950
GCVE (VulDB): GCVE-100-42474

OVAL: 🔍

CERT: 🔍
X-Force: 42533
SecurityFocus: 29292 - GnuTLS Prior to 2.2.5 Multiple Remote Vulnerabilities
Secunia: 30287
OSVDB: 45384 - CVE-2008-1950 - GnuTLS - Denial-Of-Service Issue
SecurityTracker: 1020059
Vulnerability Center: 18459 - GNU GnuTLS Integer Signedness Allows Remote Attackers to Cause Denial of Service, Medium
Vupen: ADV-2008-1582

See also: 🔍

Entryinfo

Created: 03/16/2015 17:00
Updated: 12/30/2024 02:04
Changes: 03/16/2015 17:00 (79), 08/10/2019 16:44 (12), 12/30/2024 02:04 (17)
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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