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List:       openssl-users
Subject:    [openssl-users] CVE 2017-3735 OOB read
From:       "Salz, Rich via openssl-users" <openssl-users () openssl ! org>
Date:       2017-08-29 0:11:02
Message-ID: 802EA6B2-0BE2-41D3-81BC-216BE0FEF478 () akamai ! com
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From https://www.openssl.org/news/secadv/20170828.txt

OpenSSL Security Advisory [28 Aug 2017]
========================================

Malformed X.509 IPAdressFamily could cause OOB read (CVE-2017-3735)
===================================================================

Severity: Low

If an X.509 certificate has a malformed IPAddressFamily extension,
OpenSSL could do a one-byte buffer overread. The most likely result
would be an erroneous display of the certificate in text format.

As this is a low severity fix, no release is being made. The fix can be
found in the source repository (1.0.2, 1.1.0, and master branches); see
https://github.com/openssl/openssl/pull/4276. This bug has been present
since 2006.


This issue was found by Google's OSS-Fuzz project on August 22.
The fix was developed by Rich Salz of the OpenSSL development team.


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<p class="MsoNormal"><span style="font-size:11.0pt">From <a \
href="https://www.openssl.org/news/secadv/20170828.txt"> \
https://www.openssl.org/news/secadv/20170828.txt</a><o:p></o:p></span></p> <p \
class="MsoNormal"><span style="font-size:11.0pt"><o:p>&nbsp;</o:p></span></p> <p \
class="MsoNormal"><span style="font-size:11.0pt">OpenSSL Security Advisory [28 Aug \
2017]<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">========================================<o:p></o:p></span></p>
 <p class="MsoNormal"><span style="font-size:11.0pt"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Malformed X.509 IPAdressFamily \
could cause OOB read (CVE-2017-3735)<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">===================================================================<o:p></o:p></span></p>
 <p class="MsoNormal"><span style="font-size:11.0pt"><o:p>&nbsp;</o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Severity: \
Low<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt"><o:p>&nbsp;</o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">If an X.509 certificate has a malformed IPAddressFamily \
extension,<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">OpenSSL could do a one-byte buffer overread. The most likely \
result<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">would be an erroneous display of the certificate in text \
format.<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt"><o:p>&nbsp;</o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">As this is a low severity fix, no release is being made. The \
fix can be<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">found in the source repository (1.0.2, 1.1.0, and master \
branches); see<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">https://github.com/openssl/openssl/pull/4276. This bug has \
been present<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">since 2006.<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt"><o:p>&nbsp;</o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt"><o:p>&nbsp;</o:p></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt">This issue was found by Google's OSS-Fuzz project on August \
22.<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:11.0pt">The fix \
was developed by Rich Salz of the OpenSSL development team.<o:p></o:p></span></p> <p \
class="MsoNormal"><span style="font-size:11.0pt"><o:p>&nbsp;</o:p></span></p> </div>
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