[Secure-testing-team] Bug#886006: exiv2: CVE-2017-17669: heap-buffer-overflow in Exiv2::Internal::PngChunk::keyTXTChunk

[Salvatore Bonaccorso]

Source: exiv2
Version: 0.24-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/Exiv2/exiv2/issues/187

Hi,

the following vulnerability was published for exiv2.

CVE-2017-17669[0]:
| There is a heap-based buffer over-read in the
| Exiv2::Internal::PngChunk::keyTXTChunk function of pngchunk_int.cpp in
| Exiv2 0.26. A crafted PNG file will lead to a remote denial of service
| attack.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2017-17669
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17669
[1] https://github.com/Exiv2/exiv2/issues/187

Regards,
Salvatore