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CTI Interest Score
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5.7$0-$5k0.00

A vulnerability classified as problematic has been found in Exim (Mail Server Software). This affects an unknown part. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user s file.

The weakness was shared 06/07/2010 by Dan Rosenberg (Website). The advisory is shared at vcs.exim.org. This vulnerability is uniquely identified as CVE-2010-2023. An attack has to be approached locally. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 75480 (openSUSE Security Update : exim (openSUSE-SU-2010:0416-1)), 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 118355 (Fedora Update for Exim (FEDORA-2010-9524)).

Upgrading to version 4.30 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (59043) and Tenable (75480). The entry 53470 is related to this item.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
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: Race condition
CWE: CWE-362
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 75480
Nessus Name: openSUSE Security Update : exim (openSUSE-SU-2010:0416-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 100663
OpenVAS Name: Exim < 4.72 RC2 Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Exim 4.30

Timelineinfo

05/24/2010 🔍
05/24/2010 +0 days 🔍
05/24/2010 +0 days 🔍
06/07/2010 +14 days 🔍
06/07/2010 +0 days 🔍
06/08/2010 +1 days 🔍
06/13/2014 +1466 days 🔍
03/19/2015 +279 days 🔍
09/14/2021 +2371 days 🔍

Sourcesinfo

Advisory: USN-1060-1
Researcher: Dan Rosenberg
Status: Not defined
Confirmation: 🔍

CVE: CVE-2010-2023 (🔍)
OVAL: 🔍

X-Force: 59043
Vulnerability Center: 25974 - Exim Prior to 4.72 RC2 Local DoS or Privilege Escalation Vulnerability via a Hard Link, Medium
SecurityFocus: 40451 - Exim Sticky Mail Directory Local Privilege Escalation Vulnerability
Secunia: 40019

See also: 🔍

Entryinfo

Created: 03/19/2015 12:22
Updated: 09/14/2021 18:31
Changes: 03/19/2015 12:22 (62), 02/27/2017 09:38 (10), 09/14/2021 18:23 (6), 09/14/2021 18:31 (1)
Complete: 🔍

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