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AUSCERT External Security Bulletin Redistribution
ESB-2018.0710
mbed TLS RCE patched
12 March 2018
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AusCERT Security Bulletin Summary
---------------------------------
Product: mbedtls
polarssl
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:
http://www.vuxml.org/freebsd/c2f107e1-2493-11e8-b3e8-001cc0382b2f.html
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
Collection
mbed TLS (PolarSSL) -- remote code execution
Affected packages
mbedtls < 2.7.0
polarssl13 < 1.3.22
Details
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.
[source]
References
CVE Name CVE-2018-0487
CVE Name CVE-2018-0488
URL https://tls.mbed.org/tech-updates/security-advisories/
mbedtls-security-advisory-2018-01
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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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