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Fencer Intel
medium 5.3

CVE-2024-6383 json

MongoDB C Driver bson_string_append may be vulnerable to a buffer overflow

published 2y ago modified 4mo ago also EUVD-2024-47490

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

The bson_string_append function in MongoDB C Driver may be vulnerable to a buffer overflow where the function might attempt to allocate too small of buffer and may lead to memory corruption of neighbouring heap memory. This issue affects libbson versions prior to 1.27.1

Patch / fix

  • MongoDB Inc libbson 1.27.1
  • mongo-c-driver Debian 12 1.23.1-1+deb12u1
  • mongo-c-driver Debian 14, Debian 13 1.27.1-1
  • libbson-xs-perl Debian 12 0.8.4-2+deb12u1

debian advisories DEBIAN-CVE-2024-6383

  • mongo-c-driver Ubuntu Pro 24.04 LTS 1.26.0-1.1ubuntu2+esm1

ubuntu advisories UBUNTU-CVE-2024-6383

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

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CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2y ago

Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

  • MongoDB Inc libbson

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

References

Sources

Fencer Intel 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.