Bug#1017579: Freeciv < 2.6.7, freeciv-3.0 < 3.0.3, Modpack Installer buffer overflow

[Salvatore Bonaccorso]

Control: retitle -1 freeciv: CVE-2022-3904: Modpack Installer buffer overflow

On Thu, Aug 18, 2022 at 12:51:28AM +0200, Moritz Muehlenhoff wrote:
> Source: freeciv
> Version: 2.6.6-1
> Severity: grave
> Tags: security
> X-Debbugs-Cc: Debian Security Team <team at security.debian.org>
> 
> Quoting from the announcement posted to oss-security (no CVE is
> available):
> 
> ----------------------------------------------------------------------
>  Just released freeciv-2.6.7 & freeciv-3.0.3 fix buffer overflow in
>  Modpack Installer utility's handling of the modpack URL. Specially
>  crafted URLs, without any '/' -characters would result in an
>  underflowing length (unsigned)(-1) string copy, i.e., all of the
>  NULL-terminated string given as "URL" would get written beyond the
>  buffer reserved for it.
> 
>  Freeciv source tarballs are available from
>  https://www.freeciv.org/download.html for current 3.0, and from
>  https://www.freeciv.org/wiki/Old_downloads for 2.6.
> 
>  In case you can't make full version update at the moment, bug tracker
>  ticket has also a patch for this single issue attached:
>  https://osdn.net/projects/freeciv/ticket/45299
> ----------------------------------------------------------------------

CVE-2022-39047 has been assigned for this issue.

Regards,
Salvatore