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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.1010 Cisco Jabber Desktop and Mobile Client Software Vulnerabilities 25 March 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Jabber Publisher: Cisco Systems Operating System: Mac OS Windows Apple iOS Android Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Denial of Service -- Existing Account Access Confidential Data -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2021-1471 CVE-2021-1469 CVE-2021-1418 CVE-2021-1417 CVE-2021-1411 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cisco-jabber-PWrTATTC - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Jabber Desktop and Mobile Client Software Vulnerabilities Priority: Critical Advisory ID: cisco-sa-cisco-jabber-PWrTATTC First Published: 2021 March 24 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCvw96073 CSCvw96075 CSCvw96079 CSCvx36433 CSCvx43270 CVE Names: CVE-2021-1411 CVE-2021-1417 CVE-2021-1418 CVE-2021-1469 CVE-2021-1471 CWEs: CWE-170 CWE-201 CWE-399 More... Summary o Multiple vulnerabilities in Cisco Jabber for Windows, Cisco Jabber for MacOS, and Cisco Jabber for mobile platforms could allow an attacker to execute arbitrary programs on the underlying operating system with elevated privileges, access sensitive information, intercept protected network traffic, or cause a denial of service (DoS) condition. For more information about these vulnerabilities, see the Details section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cisco-jabber-PWrTATTC Affected Products o Vulnerable Products These vulnerabilities affect Cisco Jabber for Windows, Cisco Jabber for MacOS, and Cisco Jabber for mobile platforms. For information about which Cisco software releases are vulnerable, see the Fixed Software section of this advisory. The following table indicates which platforms are affected by each Cisco CVE ID that is described in the Details section of this advisory. Cisco Jabber Associated CVE IDs Platform Windows CVE-2021-1411, CVE-2021-1417, CVE-2021-1418, CVE-2021-1469, and CVE-2021-1471 MacOS CVE-2021-1418 and CVE-2021-1471 Android and iOS CVE-2021-1418 and CVE-2021-1471 Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by these vulnerabilities. Cisco has confirmed that these vulnerabilities, with the exception of CVE-2021-1471, do not affect Cisco Jabber client software that is configured for either of the following modes: Phone-only mode Team Messaging Mode Details o The vulnerabilities are not dependent on one another. Exploitation of one of the vulnerabilities is not required to exploit another vulnerability. In addition, a software release that is affected by one of the vulnerabilities may not be affected by the other vulnerabilities. To exploit the vulnerabilities, an attacker must be: Authenticated to an Extensible Messaging and Presence Protocol (XMPP) server that the affected software is using Able to send XMPP messages to a targeted system Cisco has confirmed that these vulnerabilities, with the exception of CVE-2021-1471, do not affect Cisco Jabber client software that is configured for either of the following modes: Phone-only mode Team Messaging Mode Details about the vulnerabilities are as follows: CVE-2021-1411: Cisco Jabber Arbitrary Program Execution Vulnerability A vulnerability in Cisco Jabber for Windows could allow an authenticated, remote attacker to execute programs on a targeted system. This vulnerability is due to improper validation of message content. An attacker could exploit this vulnerability by sending crafted XMPP messages to the affected software. A successful exploit could allow the attacker to cause the application to execute arbitrary programs on the targeted system with the privileges of the user account that is running the Cisco Jabber client software, which could result in arbitrary code execution. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCvw96073 CVE ID: CVE-2021-1411 Security Impact Rating (SIR): Critical CVSS Base Score: 9.9 CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVE-2021-1469: Cisco Jabber Arbitrary Program Execution Vulnerability A vulnerability in Cisco Jabber for Windows could allow an authenticated, remote attacker to execute programs on a targeted system. This vulnerability is due to improper validation of message content. An attacker with a specially provisioned XMPP server account could exploit this vulnerability by sending crafted XMPP messages to the affected software. A successful exploit could allow the attacker to cause the application to execute arbitrary programs on the targeted system with the privileges of the user account that is running the Cisco Jabber client software, which could result in arbitrary code execution. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCvx36433 CVE ID: CVE-2021-1469 Security Impact Rating (SIR): High CVSS Base Score: 7.2 CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2021-1417: Cisco Jabber Information Disclosure Vulnerability A vulnerability in Cisco Jabber for Windows could allow an authenticated, remote attacker to access sensitive information. This vulnerability is due to improper validation of message content. An attacker could exploit this vulnerability by sending crafted XMPP messages to a targeted system. A successful exploit could allow the attacker to cause the application to return sensitive authentication information to another system, which the attacker could use in further attacks. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCvw96075 CVE ID: CVE-2021-1417 Security Impact Rating (SIR): Medium CVSS Base Score: 6.5 CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVE-2021-1471: Cisco Jabber Certificate Validation Vulnerability A vulnerability in Cisco Jabber for Windows, Cisco Jabber for MacOS, and Cisco Jabber for mobile platforms could allow an unauthenticated, remote attacker to intercept protected network traffic. This vulnerability is due to improper validation of certificates. An attacker could exploit this vulnerability by using a privileged network position to intercept network requests from the affected software and present a maliciously crafted certificate. A successful exploit could allow the attacker to inspect or modify connections between the Cisco Jabber client and a server. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCvx43270 CVE ID: CVE-2021-1471 Security Impact Rating (SIR): Medium CVSS Base Score: 5.6 CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L CVE-2021-1418: Cisco Jabber Denial of Service Vulnerability A vulnerability in Cisco Jabber for Windows, Cisco Jabber for MacOS, and Cisco Jabber for mobile platforms could allow an authenticated, remote attacker to cause a DoS condition. This vulnerability is due to improper validation of message content. An attacker could exploit this vulnerability by sending crafted XMPP messages to a targeted system. A successful exploit could allow the attacker to cause the application to terminate, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. Bug ID(s): CSCvw96079 CVE ID: CVE-2021-1418 Security Impact Rating (SIR): Medium CVSS Base Score: 4.3 CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Workarounds o There are no workarounds that address these vulnerabilities. Fixed Software o Cisco has released free software updates that address the vulnerabilities described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license: https://www.cisco.com/c/en/us/products/end-user-license-agreement.html Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades. When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page , to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Customers Without Service Contracts Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: https://www.cisco.com/c /en/us/support/web/tsd-cisco-worldwide-contacts.html Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade. Fixed Releases Customers are advised to upgrade to an appropriate fixed software release as indicated in the following tables: Cisco Jabber for Windows Cisco Jabber for Windows Release First Fixed Release Earlier than 12.1 Migrate to a fixed release. 12.1 12.1.5 12.5 12.5.4 12.6 12.6.5 12.7 12.7.4 12.8 12.8.5 12.9 12.9.5 Cisco Jabber for MacOS Cisco Jabber for MacOS Release First Fixed Release 12.7 and earlier Migrate to a fixed release. 12.8 12.8.7 12.9 12.9.6 Cisco Jabber for Android and iOS Cisco Jabber for Android and iOS Release First Fixed Release 12.9 and earlier Migrate to a fixed release. 14.0 Not vulnerable. Exploitation and Public Announcements o The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory. Source o Cisco would like to thank Olav Sortland Thoresen of Watchcom for reporting the following vulnerabilities: CVE-2021-1411, CVE-2021-1417, and CVE-2021-1418. The following vulnerabilities were found during internal security testing: CVE-2021-1469 and CVE-2021-1471. Cisco Security Vulnerability Policy o To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy . This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cisco-jabber-PWrTATTC Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2021-MAR-24 | +----------+---------------------------+----------+--------+--------------+ - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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