DescriptionAn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs854739, 854740

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
sleekxmpp (PTS)jessie1.0~beta5-2fixed
bullseye, sid, buster1.3.3-4fixed
slixmpp (PTS)stretch1.2.2-1.1fixed
bullseye, sid, buster1.4.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
sleekxmppsourcejessie(not affected)
sleekxmppsourcewheezy(not affected)


[jessie] - sleekxmpp <not-affected> (vulnerable code not present, XEP-0280 not implemented)
[wheezy] - sleekxmpp <not-affected> (vulnerable code not present, XEP-0280 not implemented)

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