Berkeley Boinc Client 6.4.5 lib/crypt.cpp RSA_public_decrypt improper authentication

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

Summaryinfo

A vulnerability has been found in Berkeley Boinc Client 6.4.5 and classified as problematic. This impacts the function RSA_public_decrypt in the library lib/crypt.cpp. The manipulation leads to improper authentication. This vulnerability is listed as CVE-2009-0126. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Berkeley Boinc Client 6.4.5 and classified as problematic. This issue affects the function RSA_public_decrypt in the library lib/crypt.cpp. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality. The summary by CVE is:

The decrypt_public function in lib/crypt.cpp in the client in Berkeley Open Infrastructure for Network Computing (BOINC) 6.2.14 and 6.4.5 does not check the return value from the OpenSSL RSA_public_decrypt 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.

The weakness was presented 01/15/2009 (Website). It is possible to read the advisory at redhat.com. The identification of this vulnerability is CVE-2009-0126 since 01/15/2009. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 35622 (Debian DSA-1718-1 : boinc - incorrect API usage), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175143 (Debian Security Update for BOINC (DSA-1718)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (35622), SecurityFocus (BID 33151†), OSVDB (54017†), Secunia (SA33806†) and Vulnerability Center (SBV-20580†). See VDB-45926, VDB-45925, VDB-45922 and VDB-45801 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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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: 🔍
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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: 35622
Nessus Name: Debian DSA-1718-1 : boinc - incorrect API usage
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 63334
OpenVAS Name: Debian Security Advisory DSA 1718-1 (boinc)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

01/07/2009 🔍
01/07/2009 +0 days 🔍
01/15/2009 +8 days 🔍
01/15/2009 +0 days 🔍
01/15/2009 +0 days 🔍
01/21/2009 +6 days 🔍
02/05/2009 +15 days 🔍
02/08/2009 +3 days 🔍
02/09/2009 +1 days 🔍
03/17/2015 +2227 days 🔍
05/21/2025 +3717 days 🔍

Sourcesinfo

Advisory: 16883
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-0126 (🔍)
GCVE (CVE): GCVE-0-2009-0126
GCVE (VulDB): GCVE-100-45923

OVAL: 🔍

SecurityFocus: 33151 - Multiple Vendor OpenSSL 'DSA_verify' Function Signature Verification Vulnerability
Secunia: 33806
OSVDB: 54017 - CVE-2009-0126 - Berkeley - BOINC Client - Security Bypass Issue
Vulnerability Center: 20580 - BOINC 6.4.5 and Earlier Remote Validation Bypass Vulnerability via a Malformed SSL/TLS Signature, Medium

See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 05/21/2025 00:19
Changes: 03/17/2015 16:11 (76), 08/25/2019 16:36 (4), 08/04/2021 07:23 (3), 05/21/2025 00:19 (18)
Complete: 🔍
Cache ID: 216:D90:103

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