Vulnerabilities > CVE-2020-9273 - Use After Free vulnerability in multiple products

047910
CVSS 8.8 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
proftpd
debian
fedoraproject
opensuse
siemens
CWE-416
nessus
NVD
Published: 2020-02-20
Updated: 2023-11-07

Summary

In ProFTPD 1.3.7, it is possible to corrupt the memory pool by interrupting the data transfer channel. This triggers a use-after-free in alloc_pool in pool.c, and possible remote code execution.

Vulnerable Configurations

Part Description Count
Application
Proftpd
1
Application
Opensuse
2
OS
Debian
3
OS
Fedoraproject
2
OS
Opensuse
1
OS
Siemens
3
Hardware
Siemens
2

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-2115.NASL
    descriptionIt was discovered that there was a regression in a previous fix for a use-after-free vulnerability in the proftpd-dfsg FTP server. Exploitation of the original vulnerability within the memory pool handling could have allowed a remote attacker to execute arbitrary code on the affected system. However, the fix that was released in proftpd-dfsg version 1.3.5e+r1.3.5-2+deb8u6 had a regression around the handling of log formatting. For more information, please see : https://github.com/proftpd/proftpd/issues/903 For Debian 8
    last seen2020-03-17
    modified2020-02-24
    plugin id133876
    published2020-02-24
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/133876
    titleDebian DLA-2115-2 : proftpd-dfsg regression update
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2020-273.NASL
    descriptionThis update for proftpd fixes the following issues : proftpd was updated to version 1.3.6c. Security issues fixed : - CVE-2020-9272: Fixed an out-of-bounds read in mod_cap (bsc#1164572). - CVE-2020-9273: Fixed a potential memory corruption caused by an interruption of the data transfer channel (bsc#1164574).
    last seen2020-03-18
    modified2020-03-02
    plugin id134196
    published2020-03-02
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134196
    titleopenSUSE Security Update : proftpd (openSUSE-2020-273)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-202003-35.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-202003-35 (ProFTPd: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in ProFTPd. Please review the CVE identifiers referenced below for details. Impact : A remote attacker, by interrupting the data transfer channel, could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-03-21
    modified2020-03-18
    plugin id134641
    published2020-03-18
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134641
    titleGLSA-202003-35 : ProFTPd: Multiple vulnerabilities
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2020-76C707CFF0.NASL
    descriptionThis update, to the current upstream stable release version, is a cumulative bug-fix release including a security fix for a use-after-free vulnerability (CVE-2020-9273): successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-03-18
    modified2020-02-28
    plugin id134135
    published2020-02-28
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134135
    titleFedora 30 : proftpd (2020-76c707cff0)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-4635.NASL
    descriptionAntonio Morales discovered an use-after-free flaw in the memory pool allocator in ProFTPD, a powerful modular FTP/SFTP/FTPS server. Interrupting current data transfers can corrupt the ProFTPD memory pool, leading to denial of service, or potentially the execution of arbitrary code.
    last seen2020-03-17
    modified2020-02-27
    plugin id134095
    published2020-02-27
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134095
    titleDebian DSA-4635-1 : proftpd-dfsg - security update
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2020-876B1F664E.NASL
    descriptionThis update, to the current upstream stable release version, is a cumulative bug-fix release including a security fix for a use-after-free vulnerability (CVE-2020-9273): successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the affected system. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-03-18
    modified2020-02-28
    plugin id134137
    published2020-02-28
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134137
    titleFedora 31 : proftpd (2020-876b1f664e)

References