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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1760
             Cisco AnyConnect Secure Mobility Client for Linux
                  Out-of-Bounds Memory Read Vulnerability
                                16 May 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           isco AnyConnect Secure Mobility Client for Linux
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Access Privileged Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-1853  

Original Bulletin: 
   https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-anyconnectclient-oob-read

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco AnyConnect Secure Mobility Client for Linux Out-of-Bounds Memory Read
Vulnerability

Priority:        Medium

Advisory ID:     cisco-sa-20190515-anyconnectclient-oob-read

First Published: 2019 May 15 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvn47574

CVE-2019-1853    

CWE-125

CVSS Score:
4.8  AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:X/RL:X/RC:X

Summary

  o A vulnerability in the HostScan component of Cisco AnyConnect Secure
    Mobility Client for Linux could allow an unauthenticated, remote attacker
    to read sensitive information on an affected system.

    The vulnerability exists because the affected software performs improper
    bounds checks. An attacker could exploit this vulnerability by crafting
    HTTP traffic for the affected component to download and process. A
    successful exploit could allow the attacker to read sensitive information
    on the affected system.

    There are no workarounds that address this vulnerability.

    This advisory is available at the following link:
    https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
    cisco-sa-20190515-anyconnectclient-oob-read

Affected Products

  o Vulnerable Products

    This vulnerability affects Cisco AnyConnect Secure Mobility Client for
    Linux. For information about affected software releases, consult the Cisco
    bug ID(s) at the top of this advisory.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

Workarounds

  o There are no workarounds that address this vulnerability.

Fixed Software

  o For information about fixed software releases , consult the Cisco bug ID(s)
    at the top of this advisory.

    When considering software upgrades, customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts 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.

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 vulnerability that is
    described in this advisory.

Source

  o Cisco would like to thank Robert Scott for reporting this vulnerability.

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-20190515-anyconnectclient-oob-read

Revision History

  o +----------+---------------------------+----------+--------+--------------+
    | Version  |        Description        | Section  | Status |     Date     |
    +----------+---------------------------+----------+--------+--------------+
    | 1.0      | Initial public release.   | -        | Final  | 2019-May-15  |
    +----------+---------------------------+----------+--------+--------------+

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