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Tasklist

FS#39490 - [libxdg-basedir] Buffer overflow

Attached to Project: Community Packages
Opened by Timmy Weerwag (tweerwag) - Sunday, 16 March 2014, 20:06 GMT
Last edited by Ronald van Haren (pressh) - Friday, 14 November 2014, 09:44 GMT
Task Type Bug Report
Category Upstream Bugs
Status Closed
Assigned To Ronald van Haren (pressh)
Architecture All
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
A malloc of a string in the xdgGetRelativeHome is too small by not counting the '\0' at the end. Can cause a segmentation fault.

Steps to reproduce:
I got consistent segfaults in a home-compiled OpenTTD.

Look at libxdg-test.c for a minimal example. Compile for example with
clang -o libxdg-test -fsanitize=address -lxdg-basedir libxdg-test.c

Reported upstream:
https://github.com/devnev/libxdg-basedir/pull/3

I've attached the fix and an updated PKGBUILD.
   xdgGetRelativeHome-overflow.p... (0.5 KiB)
   PKGBUILD (1 KiB)
   libxdg-test.c (0.1 KiB)
This task depends upon

Closed by  Ronald van Haren (pressh)
Friday, 14 November 2014, 09:44 GMT
Reason for closing:  Implemented
Additional comments about closing:  libxdg-basedir 1.2.0-3
Comment by Daniel Micay (thestinger) - Thursday, 10 April 2014, 03:29 GMT
This library seems to have a dead upstream...
Comment by mattia (nTia89) - Thursday, 13 November 2014, 20:56 GMT
I confirm the bug, but I think it's an upstream problem

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