CVE-2019-11455: canonical ubuntu_linux Out-of-bounds Read
Vulnerability summary
CVE-2019-11455 is a high (CVSS 8.1) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 2.88% chance of exploitation in the next 30 days, higher than 86.8% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 4 · Duplicates 1 · Related 1Timeline
- 22-04-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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).
CVSS metrics
6 scores · 4 sources · 3 versions- OSV · AlpineEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
2.88%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
Decrease -0.20 pp
From 3.08% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploits
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- monit< 1:5.25.3-1
- debian_linuxEOL8.0
Alpine1 product
- monit< 5.24.0-r2 | < 5.25.2-r0 | < 5.25.2-r1
Canonical1 product
- ubuntu_linuxEOL18.10 | 19.04
Fedoraproject1 product
- fedoraEOL31 | 32
Tildeslash1 product
- monit< 5.25.3
Ubuntu1 product
- monit< 1:5.6-2ubuntu0.1+esm2 | < 1:5.16-2ubuntu0.2+esm1 | < 1:5.25.1-1ubuntu0.1~esm1
6 vendors · 7 products
References
14 links- bitbucket.org/tildeslash/monit/commits/f12d0cdb42d4e74dffe1525d4062c815c48ac57aX Refsource MISCPatchThird Party AdvisoryREPORT
- github.com/dzflack/exploits/blob/master/unix/monit_buffer_overread.pyX Refsource MISCExploitThird Party AdvisoryREPORT
- github.com/dzflack/exploits/blob/master/macos/monit_dos.pyX Refsource MISCExploitThird Party AdvisoryREPORT
lists.debian.org/debian-lts-announce/2019/04/msg00028.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2021/12/msg00018.htmlMailing ListX Refsource MLISTThird Party Advisory