HOMEVULNERABILITIESCVE-2019-11455
HIGH

CVE-2019-11455

CWE-125Published: April 22, 2019· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official Description

A buffer over-read in Util_urlDecode in util.c in Tildeslash Monit before 5.25.3 allows a remote authenticated attacker to retrieve the contents of adjacent memory via manipulation of GET or POST parameters. The attacker can also cause a denial of service (application outage).

NVD Source

Technical Analysis

CVE-2019-11455 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
tildeslash1 product(s)
monit
Source: NVD CPE · 6 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bitbucket.org/tildeslash/monit/commits/f12d0cdb42d4e74dffe1525d4062c815c48ac57a
PATCHhttps://usn.ubuntu.com/3971-1/
PATCHhttps://bitbucket.org/tildeslash/monit/commits/f12d0cdb42d4e74dffe1525d4062c815c48ac57a
PATCHhttps://usn.ubuntu.com/3971-1/
ADVISORYhttps://github.com/dzflack/exploits/blob/master/macos/monit_dos.py
ADVISORYhttps://github.com/dzflack/exploits/blob/master/unix/monit_buffer_overread.py
ADVISORYhttps://lists.debian.org/debian-lts-announce/2019/04/msg00028.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/12/msg00018.html
ADVISORYhttps://github.com/dzflack/exploits/blob/master/macos/monit_dos.py
ADVISORYhttps://github.com/dzflack/exploits/blob/master/unix/monit_buffer_overread.py
ADVISORYhttps://lists.debian.org/debian-lts-announce/2019/04/msg00028.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2021/12/msg00018.html

All References (16)

→
https://bitbucket.org/tildeslash/monit/commits/f12d0cdb42d4e74dffe1525d4062c815c48ac57aPatch · Third Party Advisory
→
https://github.com/dzflack/exploits/blob/master/macos/monit_dos.pyExploit · Third Party Advisory
→
https://github.com/dzflack/exploits/blob/master/unix/monit_buffer_overread.pyExploit · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2019/04/msg00028.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/12/msg00018.htmlMailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZQDHRSKTEX5MSYXNCGFTUSFGANBARHX/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L475QJMFFI2QV5QEHAKKPVX6QX6ECUL6/
→
https://usn.ubuntu.com/3971-1/Patch · Third Party Advisory
→
https://bitbucket.org/tildeslash/monit/commits/f12d0cdb42d4e74dffe1525d4062c815c48ac57aPatch · Third Party Advisory
→
https://github.com/dzflack/exploits/blob/master/macos/monit_dos.pyExploit · Third Party Advisory
→
https://github.com/dzflack/exploits/blob/master/unix/monit_buffer_overread.pyExploit · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2019/04/msg00028.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2021/12/msg00018.htmlMailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HZQDHRSKTEX5MSYXNCGFTUSFGANBARHX/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L475QJMFFI2QV5QEHAKKPVX6QX6ECUL6/

Quick Facts

CVE IDCVE-2019-11455
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-125
CISA KEVNo
Affected4 vendor(s)
PublishedApr 22, 2019

Related CVEs (CWE-125)

CVE-2013-0767
10.0
CVE-2021-21777
10.0
CVE-2017-14451
10.0
CVE-2021-41556
10.0
CVE-2009-2523
10.0
CVE-2026-34987
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-11455 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2019-11455·NVD