GNU Privacy Guard up to 1.0.3 Signature Check improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in GNU Privacy Guard up to 1.0.3. This issue affects some unknown processing of the component Signature Check Handler. Performing a manipulation results in improper authentication. This vulnerability is known as CVE-2000-0974. Furthermore, an exploit is available. This vulnerability has a historic impact because of its background and how it was received. It is advisable to upgrade the affected component. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Detailsinfo

A vulnerability, which was classified as critical, was found in GNU Privacy Guard up to 1.0.3. This affects an unknown functionality of the component Signature Check Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

GnuPG (gpg) 1.0.3 does not properly check all signatures of a file containing multiple documents, which allows an attacker to modify contents of all documents but the first without detection.

The weakness was published 10/11/2000 by Jim Small (FIRST) as not defined posting (Bugtraq). The advisory is shared at archives.neohapsis.com. This vulnerability is uniquely identified as CVE-2000-0974. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but an exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/25/2021). Due to its background and reception, this vulnerability has a historic impact.

After immediately, there has been an exploit disclosed. The exploit is shared for download at archives.neohapsis.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 61850 (Mandrake Linux Security Advisory : gnupg (MDKSA-2000:063-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks.

Upgrading to version 1.0.3b eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (5386), Tenable (61850), SecurityFocus (BID 1797†), OSVDB (1608†) and Vulnerability Center (SBV-38467†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
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: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 61850
Nessus Name: Mandrake Linux Security Advisory : gnupg (MDKSA-2000:063-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Privacy Guard 1.0.3b

Timelineinfo

10/11/2000 🔍
10/11/2000 +0 days 🔍
10/12/2000 +0 days 🔍
10/12/2000 +0 days 🔍
12/19/2000 +68 days 🔍
02/21/2003 +794 days 🔍
09/06/2012 +3484 days 🔍
02/19/2013 +166 days 🔍
07/01/2014 +497 days 🔍
06/25/2021 +2551 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: archives.neohapsis.com
Researcher: Jim Small (FIRST)
Status: Not defined

CVE: CVE-2000-0974 (🔍)
GCVE (CVE): GCVE-0-2000-0974
GCVE (VulDB): GCVE-100-16185
X-Force: 5386 - GnuPG allows users to modfiy signed messages
SecurityFocus: 1797 - GnuPG Multiple Signed Message Modification Vulnerability
OSVDB: 1608 - GnuPG Multiply Signed Message Document Modification
Vulnerability Center: 38467 - GnuPG <=1.0.3 Remote Modification of Documents Contents due to Improper Checking of File Signatures, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/02/2014 12:50 AM
Updated: 06/25/2021 10:40 AM
Changes: 07/02/2014 12:50 AM (73), 04/24/2017 03:08 PM (3), 06/25/2021 10:40 AM (3)
Complete: 🔍
Cache ID: 244:B8B:40

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