Bug 1393920 (CVE-2016-7054)

Summary: CVE-2016-7054 openssl: Corrupting larger payloads when using ChaCha20/Poly1305 ciphersuites leads to DoS
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: bbaranow, bmaxwell, cdewolf, csutherl, dandread, darran.lofthouse, dosoudil, erik-fedora, gzaronik, jawilson, jclere, ktietz, lersek, lgao, marcandre.lureau, mbabacek, mjc, myarboro, pgier, psakar, pslavice, redhat-bugzilla, rjones, rnetuka, rsvoboda, sardella, tmraz, twalsh, vtunka, weli
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OS: Linux   
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Fixed In Version: openssl 1.1.0c Doc Type: If docs needed, set a value
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Last Closed: 2016-11-10 16:03:21 UTC Type: ---
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Description Adam Mariš 2016-11-10 16:02:19 UTC
Quoting form the OpenSSL upstream advisory:

ChaCha20/Poly1305 heap-buffer-overflow (CVE-2016-7054)
======================================================

Severity: High

TLS connections using *-CHACHA20-POLY1305 ciphersuites are susceptible to a DoS
attack by corrupting larger payloads. This can result in an OpenSSL crash. This
issue is not considered to be exploitable beyond a DoS.

OpenSSL 1.1.0 users should upgrade to 1.1.0c

This issue does not affect OpenSSL versions prior to 1.1.0

This issue was reported to OpenSSL on 25th September 2016 by Robert
Święcki (Google Security Team), and was found using honggfuzz. The fix
was developed by Richard Levitte of the OpenSSL development team.

External References:

https://www.openssl.org/news/secadv/20161110.txt

Comment 1 Adam Mariš 2016-11-10 16:02:44 UTC
Acknowledgments:

Name: the OpenSSL project
Upstream: Robert Święcki (Google Security Team)