Bug#882463: xrdp: CVE-2017-16927: Buffer-overflow in scp_v0s_accept function in session manager

[Salvatore Bonaccorso]

Source: xrdp
Version: 0.9.1-1
Severity: grave
Tags: security upstream
Forwarded: https://github.com/neutrinolabs/xrdp/pull/958

Hi,

the following vulnerability was published for xrdp.

CVE-2017-16927[0]:
| The scp_v0s_accept function in sesman/libscp/libscp_v0.c in the session
| manager in xrdp through 0.9.4 uses an untrusted integer as a write
| length, which allows local users to cause a denial of service (buffer
| overflow and application crash) or possibly have unspecified other
| impact via a crafted input stream.

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-2017-16927
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16927
[1] https://groups.google.com/forum/#!topic/xrdp-devel/PmVfMuy_xBA
[2] https://github.com/neutrinolabs/xrdp/pull/958

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore