ESB-2018.0710 - [Linux][FreeBSD] FreeBSD: Multiple vulnerabilities 2018-03-12

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             AUSCERT External Security Bulletin Redistribution

                           mbed TLS RCE patched
                               12 March 2018


        AusCERT Security Bulletin Summary

Product:           mbedtls
Publisher:         FreeBSD
Operating System:  FreeBSD
                   Linux variants
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0488 CVE-2018-0487 

Original Bulletin:

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than FreeBSD. It is recommended that administrators
         running mbed TLS (PolarSSL) check for an updated version of the 
         software for their operating system.

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FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports

mbed TLS (PolarSSL) -- remote code execution

Affected packages
  mbedtls    < 2.7.0
  polarssl13 < 1.3.22


VuXML ID  c2f107e1-2493-11e8-b3e8-001cc0382b2f
Discovery 2018-02-05
Entry     2018-03-10

Simon Butcher reports:

      + When the truncated HMAC extension is enabled and CBC is used, sending a
        malicious application packet can be used to selectively corrupt 6 bytes
        on the peer's heap, potentially leading to a crash or remote code
        execution. This can be triggered remotely from either side in both TLS
        and DTLS.
      + When RSASSA-PSS signature verification is enabled, sending a
        maliciously constructed certificate chain can be used to cause a buffer
        overflow on the peer's stack, potentially leading to crash or remote
        code execution. This can be triggered remotely from either side in both
        TLS and DTLS.


CVE Name     CVE-2018-0487
CVE Name     CVE-2018-0488

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Copyright 2003-2005 Jacques Vidrine and contributors.
Please see the source of this document for full copyright information.

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