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Fencer Vulns
medium 6.5

CVE-2019-11476 json

Integer overflow in whoopsie results in out-of-bounds heap write

published 2019-08-29 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3149

cvss
6.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

An integer overflow in whoopsie before versions 0.2.52.5ubuntu0.1, 0.2.62ubuntu0.1, 0.2.64ubuntu0.1, 0.2.66, results in an out-of-bounds write to a heap allocated buffer when processing large crash dumps. This results in a crash or possible code-execution in the context of the whoopsie process.

Patch / fix

  • whoopsie Ubuntu 16.04 LTS 0.2.52.5ubuntu0.1
  • whoopsie Ubuntu 18.04 LTS 0.2.62ubuntu0.1

ubuntu advisories UBUNTU-CVE-2019-11476

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • usn.ubuntu.com https://usn.ubuntu.com/4052-1/ referenced PoC, tagged "exploit" by a source, unverified
  • bugs.launchpad.net https://bugs.launchpad.net/ubuntu/%2Bsource/whoopsie/%2Bbug/1830863 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 6.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Ubuntu Whoopsie

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.