RCE in Vsftpd
CVE-2011-2523
vsftpd 2.3.4 downloaded between 20110630 and 20110703 contains a backdoor which opens a shell on port 6200/tcp.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.962 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Vsftpd — versions 2.3.4 downloaded between 20110630 and 20110703
- Vsftpd_project Vsftpd — versions 2.3.4
- Debian Debian_linux — versions 8.0, 9.0, 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2011-2523?
- CVE-2011-2523 is a critical-severity vulnerability in Vsftpd, classified under OS Command Injection. CVSS score: 9.8/10. Published 2019-11-27.
- How severe is CVE-2011-2523?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2011-2523 known to be exploited?
- 331 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.