CVE-2018-6789 Exim 4.90 and earlier
===================================
There is a buffer overflow in an utility function, if some pre-conditions
are met. Using a handcrafted message, remote code execution seems to be
possible.
A patch exists already and is being tested.
Currently we're unsure about the severity, we *believe*, an exploit
is difficult. A mitigation isn't known.
Next steps:
* t0: Distros will get access to our "security" non-public git repo
(based on the SSH keys known to us)
* t0 +7d: Patch will be published on the official public git repo
t0 will be around 2018-02-08.
Timeline
--------
* 2018-02-05 Report from Meh Chang <meh@???> via exim-security mailing list
* 2018-02-06 Request CVE on https://cveform.mitre.org/ (heiko)
CVE-2018-6789
* 2018-02-07 Announcement to the public via exim-users, exim-maintainers
mailing lists and on oss-security mailing list
Updates will follow. Here and on
https://exim.org/security/CVE-2018-6789.txt
(Link will start to exist around 11.00 UTC).
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
--
SCHLITTERMANN.de ---------------------------- internet & unix support -
Heiko Schlittermann, Dipl.-Ing. (TU) - {fon,fax}: +49.351.802998{1,3} -
gnupg encrypted messages are welcome --------------- key ID: F69376CE -
! key id 7CBF764A and 972EAC9F are revoked since 2015-01 ------------ -
