Cisco Jabber for Mac Client Jabber Client Framework permission

Summaryinfo

A vulnerability was found in Cisco Jabber for Mac Client. It has been declared as critical. This affects an unknown part of the component Jabber Client Framework. The manipulation results in permission. This vulnerability was named CVE-2018-0449. The attack needs to be approached locally. There is no available exploit.

Detailsinfo

A vulnerability classified as critical has been found in Cisco Jabber for Mac Client (version now known). Affected is some unknown processing of the component Jabber Client Framework. The manipulation with an unknown input leads to a permission vulnerability. CWE is classifying the issue as CWE-275. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the Cisco Jabber Client Framework (JCF) software, installed as part of the Cisco Jabber for Mac client, could allow an authenticated, local attacker to corrupt arbitrary files on an affected device that has elevated privileges. The vulnerability exists due to insecure directory permissions set on a JCF created directory. An authenticated attacker with the ability to access an affected directory could create a hard link to an arbitrary location on the affected system. An attacker could convince another user that has administrative privileges to perform an install or update the Cisco Jabber for Mac client to perform such actions, allowing files to be created in an arbitrary location on the disk or an arbitrary file to be corrupted when it is appended to or overwritten.

The bug was discovered 01/09/2019. The weakness was presented 01/10/2019 with Apple as cisco-sa-20190109-jabr-mac-per as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2018-0449 since 11/27/2017. The attack needs to be approached locally. Required for exploitation is a authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/28/2020). The MITRE ATT&CK project declares the attack technique as T1222.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 106520†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Cisco

Name

• Jabber for Mac Client

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Once again VulDB remains the best source for vulnerability data.

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