Apple Mac OS X up to 10.8 Screen Sharing Server format string

CVSS Meta Temp Score
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CTI Interest Score
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9.4$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Apple Mac OS X up to 10.8. Affected by this issue is some unknown functionality of the component Screen Sharing Server. Such manipulation leads to format string. This vulnerability is documented as CVE-2013-5135. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Apple Mac OS X up to 10.8 (Operating System). Affected by this issue is an unknown code block of the component Screen Sharing Server. 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. CVE summarizes:

Format string vulnerability in Screen Sharing Server in Apple Mac OS X before 10.9 and Apple Remote Desktop before 3.5.4 allows remote attackers to execute arbitrary code via format string specifiers in a VNC username.

The weakness was released 10/22/2013 by SilentSignal as APPLE-SA-2013-10-22-3 as confirmed mailinglist post (Apple Security Mailinglist). The advisory is available at lists.apple.com. The mailinglist post contains:

A format string vulnerability existed in Screen Sharing Server's handling of the VNC username.
This vulnerability is handled as CVE-2013-5135 since 08/15/2013. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/01/2021).

The vulnerability scanner Nessus provides a plugin with the ID 70609 (Apple Remote Desktop < 3.5.4 / 3.7 Multiple Vulnerabilities (Mac OS X)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks.

Upgrading to version 10.9 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (70609), SecurityFocus (BID 63284†) and Vulnerability Center (SBV-42117†). Entries connected to this vulnerability are available at VDB-10932, VDB-10931, VDB-10933 and VDB-10926. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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: 70609
Nessus Name: Apple Remote Desktop < 3.5.4 / 3.7 Multiple Vulnerabilities (Mac OS X)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Mac OS X 10.9

Timelineinfo

08/15/2013 🔍
10/22/2013 +68 days 🔍
10/22/2013 +0 days 🔍
10/23/2013 +1 days 🔍
10/23/2013 +0 days 🔍
10/25/2013 +2 days 🔍
10/29/2013 +4 days 🔍
06/01/2021 +2772 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: APPLE-SA-2013-10-22-3
Researcher: SilentSignal
Status: Confirmed

CVE: CVE-2013-5135 (🔍)
GCVE (CVE): GCVE-0-2013-5135
GCVE (VulDB): GCVE-100-10946
SecurityFocus: 63284
Vulnerability Center: 42117 - Apple MacOS X and Remote Desktop Remote Arbitrary Code Execution Vulnerability Via Format String Specifiers, High

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍

Entryinfo

Created: 10/23/2013 17:41
Updated: 06/01/2021 08:29
Changes: 10/23/2013 17:41 (47), 05/14/2017 09:50 (22), 06/01/2021 08:29 (3)
Complete: 🔍
Cache ID: 216:C5D:103

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