VDB-49306 · CVE-2009-2666 · BID 35951

fetchmail up to 5.9.7 socket.c cryptographic issues

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability has been found in fetchmail up to 5.9.7 and classified as critical. This vulnerability affects an unknown code block of the file socket.c. The manipulation with an unknown input leads to a cryptographic issues vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

socket.c in fetchmail before 6.3.11 does not properly handle a \0 character in a domain name in the subject s Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

The weakness was released 08/05/2009 by Matthias Andree (Website). The advisory is available at vupen.com. This vulnerability was named CVE-2009-2666. 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. This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 41998 (openSUSE 10 Security Update : fetchmail (fetchmail-6410)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165653 (SUSE Enterprise Linux Security Update Subversion (SUSE-SA:2009:044)).

Upgrading to version 5.9.8 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 vulnerability database at Tenable (41998). Entries connected to this vulnerability are available at 41033, 50153 and 49314.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Cryptographic issues
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 41998
Nessus Name: openSUSE 10 Security Update : fetchmail (fetchmail-6410)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 64631
OpenVAS Name: Debian Security Advisory DSA 1852-1 (fetchmail)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: fetchmail 5.9.8

Timelineinfo

08/05/2009 🔍
08/05/2009 +0 days 🔍
08/05/2009 +0 days 🔍
08/05/2009 +0 days 🔍
08/05/2009 +0 days 🔍
08/06/2009 +1 days 🔍
08/07/2009 +0 days 🔍
08/10/2009 +3 days 🔍
10/06/2009 +57 days 🔍
03/18/2015 +1989 days 🔍
08/13/2021 +2340 days 🔍

Sourcesinfo

Advisory: vupen.com⛔
Researcher: Matthias Andree
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-2666 (🔍)
OVAL: 🔍

Vulnerability Center: 23150 - Eric Raymond Fetchmail Prior to 6.3.11 Remote Security Bypass Vulnerability via SSL, High
SecurityFocus: 35951 - Fetchmail NULL Character CA SSL Certificate Validation Security Bypass Vulnerability
OSVDB: 56855 - Fetchmail X.509 Certificate Authority (CA) Common Name Null Byte Handling SSL MiTM Weakness

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/13/2021 15:17
Changes: 03/18/2015 15:15 (66), 02/13/2017 10:05 (9), 08/13/2021 15:11 (4), 08/13/2021 15:17 (1)
Complete: 🔍

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