Buffer overflow in Debian Linux - CVE-2017-16927
Published: November 23, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU37877
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-16927
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
Affected software
Debian Linux
Fedora
xrdp
Fedora
xrdp
How to mitigate CVE-2017-16927
Install update from vendor's website.
xrdp - addressed in versions 0.9.4-2.el7, 0.9.4-2.fc25, 0.9.4-2.fc26, 0.9.4-2.fc27, 0.9.5-1.el7, 0.9.5-1.fc26, 0.9.5-1.fc27