Vulnerability of ProFTPD: read-write access via mod_copy Limit Bypass

Synthesis of the vulnerability

An attacker can bypass access restrictions via mod_copy Limit Bypass of ProFTPD, in order to read or alter data.

Vulnerable products: Debian, Fedora, openSUSE Leap, ProFTPD, SIMATIC, SLES.

Severity of this weakness: 3/4.

Creation date: 22/07/2019.

Références of this bulletin: CVE-2019-12815, DLA-1873-1, DSA-4491-1, FEDORA-2019-e9187610c3, openSUSE-SU-2019:1836-1, openSUSE-SU-2019:1870-1, openSUSE-SU-2020:0031-1, SSA-940889, VIGILANCE-VUL-29844.

Description of the vulnerability

An attacker can bypass access restrictions via mod_copy Limit Bypass of ProFTPD, in order to read or alter data.
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This cybersecurity note impacts software or systems such as Debian, Fedora, openSUSE Leap, ProFTPD, SIMATIC, SLES.

Our Vigil@nce team determined that the severity of this computer weakness announce is important.

The trust level is of type confirmed by the editor, with an origin of internet client.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a technician ability can exploit this cybersecurity vulnerability.

Solutions for this threat

ProFTPD: patch for mod_copy Limit Bypass.
A patch is indicated in information sources.

Debian 8: new proftpd-dfsg packages.
New packages are available:
Debian 8: proftpd-dfsg 1.3.5e+r1.3.5-2+deb8u3

Debian 9: new proftpd-dfsg packages.
New packages are available:
Debian 9: proftpd-dfsg 1.3.5b-4+deb9u1
Debian 10: proftpd-dfsg 1.3.6-4+deb10u1

Fedora 30: new proftpd packages.
New packages are available:
Fedora 30: proftpd 1.3.6-21.fc30

openSUSE Leap 15.1: new proftpd packages.
New packages are available:
  openSUSE Leap 15.1: proftpd 1.3.6b-lp151.3.6.1
  SUSE LE 15 RTM: proftpd 1.3.6b-bp150.3.6.1
  SUSE LE 15 SP1: proftpd 1.3.6b-bp151.4.6.2

openSUSE Leap 15: new proftpd packages.
New packages are available:
  openSUSE Leap 15.0: proftpd 1.3.5e-lp150.2.3.1
  openSUSE Leap 15.1: proftpd 1.3.5e-lp151.3.3.1
  SUSE LE 15 RTM-SP1: proftpd 1.3.5e-bp150.3.3.1

Siemens SIMATIC: solution for ProFTPD.
The solution is indicated in information sources.

SUSE LE 15 SP1: new proftpd packages.
New packages are available:
SUSE LE 15 SP1: proftpd 1.3.5e-bp151.4.3.1
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