Bug#875344: opencv: CVE-2017-12863: Integer overflow in PxMDecoder::readData

[Salvatore Bonaccorso]

Source: opencv
Version: 2.4.9.1+dfsg-1
Severity: important
Tags: upstream security
Forwarded: https://github.com/opencv/opencv/issues/9371

Hi,

the following vulnerability was published for opencv.

CVE-2017-12863[0]:
| In opencv/modules/imgcodecs/src/grfmt_pxm.cpp, function
| PxMDecoder::readData has a integer overflow when calculate src_pitch.
| If the image is from remote, may lead to remote code execution or
| denial of service. This affects Opencv 3.3 and earlier.

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-2017-12863
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12863
[1] https://github.com/opencv/opencv/issues/9371

Regards,
Salvatore