Re: CVE request: file(1) DoS

[Alexander Cherepanov <cherepan () mccme ru>]

On 2014-12-17 03:44, Alexander Cherepanov wrote:
> There are two more DoSes fixed in ELF parser of file(1), similar to the
> recent CVE-2014-8116.

These fixes were included in 5.22 release:

http://mx.gw.com/pipermail/file/2015/001660.html

> 1. Limit the number of ELF notes processed
> Report: http://mx.gw.com/pipermail/file/2014/001653.html
> Fix: https://github.com/file/file/commit/ce90e05774dd77d86cfc8dfa6da57b32816841c4

This issue seems to be introduced here:

https://github.com/file/file/commit/956a45ab1c54b11304b367056f41905e72a02380#diff-bc5c24ef9f39a5f4963ca28ecbc645b3L423

which ended up in 5.08 release. Hence releases 5.08--5.21 are vulnerable.

> 2. Limit string printing to 100 chars
> Report: http://mx.gw.com/pipermail/file/2014/001654.html
> Fix: https://github.com/file/file/commit/65437cee25199dbd385fb35901bc0011e164276c

This issue was introduced in the following commit:

https://github.com/file/file/commit/c8451af8ab0c2e2a93ce93b9c68257d31576cc85

which ended up in 5.16 release. Hence releases 5.16--5.21 are vulnerable.

> Both problems amplified by the fact that the same section in ELF file
> can be referenced and processed by file(1) multiple times. This is also
> fixed in the first commit linked above.
>
> Could CVE(s) please be assigned?

--
Alexander Cherepanov