CVE-2017-3733

NameCVE-2017-3733
DescriptionDuring a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
openssl (PTS)wheezy1.0.1e-2+deb7u20fixed
wheezy (security)1.0.1t-1+deb7u3fixed
jessie1.0.1t-1+deb8u6fixed
jessie (security)1.0.1t-1+deb8u7fixed
stretch1.1.0f-3fixed
stretch (security)1.1.0f-3+deb9u1fixed
buster, sid1.1.0g-2fixed
openssl1.0 (PTS)stretch1.0.2l-2fixed
stretch (security)1.0.2l-2+deb9u1fixed
buster, sid1.0.2m-3fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
opensslsource(unstable)1.1.0e-1medium
opensslsourcejessie(not affected)
opensslsourcewheezy(not affected)
openssl1.0source(unstable)(not affected)

Notes

[jessie] - openssl <not-affected> (Only affects 1.1)
[wheezy] - openssl <not-affected> (Only affects 1.1)
- openssl1.0 <not-affected> (Only affects 1.1)
https://www.openssl.org/news/secadv/20170216.txt

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