Finkproject libnasl 2.2.11 this improper authentication ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Finkproject libnasl 2.2.11. This affects the function this. Executing a manipulation can lead to improper authentication. This vulnerability is tracked as CVE-2009-0125. No exploit exists. The existence of this vulnerability is still disputed at present. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Finkproject libnasl 2.2.11 (Project Management Software) and classified as problematic. This vulnerability affects the function this. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality. CVE summarizes:

** DISPUTED ** NOTE: this issue has been disputed by the upstream vendor. nasl/nasl_crypto2.c in the Nessus Attack Scripting Language library (aka libnasl) 2.2.11 does not properly check the return value from the OpenSSL DSA_do_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077. NOTE: the upstream vendor has disputed this issue, stating "while we do misuse this function (this is a bug), it has absolutely no security ramification."

The bug was discovered 01/07/2009. The weakness was disclosed 01/15/2009 as Bug 479655 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2009-0125 since 01/15/2009. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. The real existence of this vulnerability is still doubted at the moment. The vulnerability scanner Nessus provides a plugin with the ID 35447 (openSUSE 10 Security Update : libnasl (libnasl-5943)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (35447), SecurityFocus (BID 33151†), OSVDB (51164†) and Vulnerability Center (SBV-20579†). The entries VDB-45926, VDB-45925, VDB-45923 and VDB-45921 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 35447
Nessus Name: openSUSE 10 Security Update : libnasl (libnasl-5943)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 66027
OpenVAS Name: Mandrake Security Advisory MDVSA-2009:271 (libnasl)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

01/07/2009 🔍
01/07/2009 +0 days 🔍
01/07/2009 +0 days 🔍
01/15/2009 +8 days 🔍
01/15/2009 +0 days 🔍
01/15/2009 +0 days 🔍
01/20/2009 +5 days 🔍
01/21/2009 +1 days 🔍
01/22/2009 +1 days 🔍
03/17/2015 +2245 days 🔍
08/07/2024 +3431 days 🔍

Sourcesinfo

Advisory: Bug 479655
Status: Not defined
Confirmation: 🔍
Disputed: 🔍

CVE: CVE-2009-0125 (🔍)
GCVE (CVE): GCVE-0-2009-0125
GCVE (VulDB): GCVE-100-45922
SecurityFocus: 33151 - Multiple Vendor OpenSSL 'DSA_verify' Function Signature Verification Vulnerability
OSVDB: 51164 - Multiple vendor OpenSSL EVP_VerifyFinal() certificate chain validation security bypass
Vulnerability Center: 20579 - Nessus libnasl 2.2.11 Remote Validation Bypass Vulnerability via a Malformed SSL/TLS Signature, Medium

See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 08/07/2024 08:20
Changes: 03/17/2015 16:11 (77), 08/25/2019 16:33 (5), 08/07/2024 08:20 (17)
Complete: 🔍
Cache ID: 216:B52:103

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