Sendmail up to 8.14.8 conf.c sm_close_on_exec information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Sendmail up to 8.14.8 and classified as problematic. This affects the function sm_close_on_exec of the file conf.c. Executing a manipulation can lead to information disclosure. The identification of this vulnerability is CVE-2014-3956. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Sendmail up to 8.14.8 (Mail Server Software). It has been declared as problematic. This vulnerability affects the function sm_close_on_exec of the file conf.c. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.

The weakness was shared 05/21/2014 as confirmed release notes (Website). The advisory is shared for download at sendmail.com. The vendor cooperated in the coordination of the public release. This vulnerability was named CVE-2014-3956 since 06/03/2014. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 74503 (Fedora 20 : sendmail-8.14.8-2.fc20 (2014-7093)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 330041 (IBM AIX Sendmail File Descriptor Security Vulnerability (sendmail_advisory3)).

Upgrading to version 8.14.9 eliminates this vulnerability. The upgrade is hosted for download at ftp.sendmail.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (93592), Tenable (74503), SecurityFocus (BID 67791†), OSVDB (107311†) and Secunia (SA57455†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 74503
Nessus Name: Fedora 20 : sendmail-8.14.8-2.fc20 (2014-7093)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for sendmail FEDORA-2014-7095
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: Sendmail 8.14.9

Timelineinfo

05/21/2014 🔍
05/21/2014 +0 days 🔍
05/21/2014 +0 days 🔍
06/03/2014 +13 days 🔍
06/03/2014 +0 days 🔍
06/04/2014 +1 days 🔍
06/04/2014 +0 days 🔍
06/05/2014 +1 days 🔍
06/09/2014 +4 days 🔍
06/10/2014 +1 days 🔍
06/13/2014 +3 days 🔍
06/20/2021 +2564 days 🔍

Sourcesinfo

Advisory: sendmail.com
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2014-3956 (🔍)
GCVE (CVE): GCVE-0-2014-3956
GCVE (VulDB): GCVE-100-13444

OVAL: 🔍

X-Force: 93592 - Sendmail SMTP security bypass, Low Risk
SecurityFocus: 67791 - Sendmail File Descriptor Security Vulnerability
Secunia: 57455 - Sendmail Close-on-Exec File Descriptors Access Bypass Security Issue, Not Critical
OSVDB: 107311
SecurityTracker: 1030331
Vulnerability Center: 44848 - Sendmail before 8.14.9 Local Bypass Restriction due to not Properly Closing File Descriptors, Low

Entryinfo

Created: 06/05/2014 11:17
Updated: 06/20/2021 15:23
Changes: 06/05/2014 11:17 (84), 03/16/2019 08:30 (8), 06/20/2021 15:23 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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