An incorrect implementation of “XEP-0280: Message Carbons” in multiple XMPP clients allows a remote attacker to impersonate any user, including contacts, in the vulnerable application’s display. This allows for various kinds of social engineering attacks. This CVE is for SleekXMPP up to 1.3.1 and Slixmpp all versions up to 1.2.3, as bundled in poezio (0.8 - 0.10) and other products.
openwall.com/lists/oss-security/2017/02/09/29
www.securityfocus.com/bid/96166
github.com/poezio/slixmpp/commit/22664ee7b86c8e010f312b66d12590fb47160ad8
nvd.nist.gov/vuln/detail/CVE-2017-5591
pypi.org/project/sleekxmpp
rt-solutions.de/en/2017/02/CVE-2017-5589_xmpp_carbons/
rt-solutions.de/wp-content/uploads/2017/02/CVE-2017-5589_xmpp_carbons.pdf