exim up to 4.69 dkim_exim_verify_finish format string

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in exim up to 4.69. This affects the function dkim_exim_verify_finish. The manipulation leads to format string. This vulnerability is documented as CVE-2011-1764. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in exim up to 4.69 (Mail Server Software). It has been rated as critical. This issue affects the function dkim_exim_verify_finish. The manipulation with an unknown input leads to a format string vulnerability. Using CWE to declare the problem leads to CWE-134. The product uses a function that accepts a format string as an argument, but the format string originates from an external source. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Format string vulnerability in the dkim_exim_verify_finish function in src/dkim.c in Exim before 4.76 might allow remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via format string specifiers in data used in DKIM logging, as demonstrated by an identity field containing a % (percent) character.

The weakness was released 10/04/2011 as Bug 702474 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2011-1764. 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 are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 74790 (openSUSE Security Update : exim (openSUSE-SU-2012:1404-1)), 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 53013 (Exim Mail Server Format string Vulnerability).

Upgrading to version 4.70 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (67299), Tenable (74790), SecurityFocus (BID 47736†) and Vulnerability Center (SBV-31368†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Format string
CWE: CWE-134 / CWE-119
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: 74790
Nessus Name: openSUSE Security Update : exim (openSUSE-SU-2012:1404-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 69730
OpenVAS Name: Debian Security Advisory DSA 2232-1 (exim4)
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 4.70
Patch: git.exim.org

Timelineinfo

04/19/2011 🔍
04/30/2011 +11 days 🔍
05/06/2011 +6 days 🔍
05/09/2011 +3 days 🔍
10/04/2011 +148 days 🔍
10/04/2011 +0 days 🔍
06/13/2014 +983 days 🔍
03/23/2015 +283 days 🔍
11/23/2021 +2437 days 🔍

Sourcesinfo

Advisory: Bug 702474
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-1764 (🔍)
GCVE (CVE): GCVE-0-2011-1764
GCVE (VulDB): GCVE-100-58841

OVAL: 🔍

X-Force: 67299
SecurityFocus: 47736 - Exim 'dkim_exim_verify_finish()' Remote Format String Vulnerability
Secunia: 51155
Vulnerability Center: 31368 - Exim before 4.76 RC1 Remote Arbitrary Code Execution Vulnerability, High

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/23/2021 09:30
Changes: 03/23/2015 16:50 (64), 03/22/2017 09:40 (9), 11/23/2021 09:27 (6), 11/23/2021 09:30 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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