Description
MCabber before 1.0.4 is vulnerable to roster push attacks, which allows remote attackers to intercept communications, or add themselves as an entity on a 3rd party's roster as another user, which will also garner associated privileges, via crafted XMPP packets.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| MCabber | MCabber | before 1.0.4 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | mcabber | 0.10.2-1.1 | — |
| Debian 12 | mcabber | 0.10.2-1.1 | — |
| Debian 8 | mcabber | 0.10.2-1+deb8u1 | DLA-2260-1 |
| Debian 7 | mcabber | 0.10.1-3+deb7u1 | DLA-724-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | mcabber | 0.10.2-1+deb8u1build0.16.04.1 | USN-4506-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libqxmpp | 1.16.1-1.1 | openSUSE-SU-2026:11142-1 |
Advisories 4
- openSUSE-SU-2026:11142-1 libQXmppQt6-10-1.16.1-1.1 on GA media SUSE / openSUSE Security Updates · Jun 29, 2026
- DLA-724-1 mcabber - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2260-1 mcabber - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-4506-1 mcabber vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1403790
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845258
- https://bitbucket.org/McKael/mcabber-crew/commits/6e1ead98930d7dd0a520ad17c720ae4908429033/raw
- https://gultsch.de/gajim_roster_push_and_message_interception.html
- http://www.openwall.com/lists/oss-security/2017/02/09/29
- http://www.openwall.com/lists/oss-security/2016/12/11/2
- http://www.securityfocus.com/bid/94862
- http://lists.opensuse.org/opensuse-updates/2017-01/msg00130.html
- [debian-lts-announce] 20200628 [SECURITY] [DLA 2260-1] mcabber security update mailing-list
- USN-4506-1 vendor-advisory